Patent Publication Number: US-2023134243-A1

Title: Dynamic Use Of Secondary Devices During a Virtual Session

Description:
CROSS REFERENCE TO RELATED CASE 
     This application is a continuation of and claims priority to co-pending PCT Application No. PCT/CN21/127417, filed on Oct. 29, 2021, which is titled “DYNAMIC USE OF SECONDARY DEVICES DURING A VIRTUAL SESSION,” which is incorporated herein by reference in its entirety for all purposes. 
    
    
     FIELD 
     Aspects described herein generally relate to computers, networking, remote access, and virtualization. Aspects further describe methods and systems for establishing a virtual session environment using one or more devices. In particular, one or more aspects of the disclosure relate to automated conversion of the one or more devices as virtual input sources for a virtual session. 
     BACKGROUND 
     A user may establish a virtual session using one of a plurality of devices available for the user. Yet, for entering the user&#39;s inputs for the virtual session as well as for the session display, the user may be inconveniently limited to use only the one device that is used to establish the virtual session while other devices may be idling. The other idling devices may be utilized to improve the user&#39;s experience with the virtual session. 
     SUMMARY 
     The following presents a simplified summary of various aspects described herein. This summary is not an extensive overview, and is not intended to identify required or critical elements or to delineate the scope of the claims. The following summary merely presents some concepts in a simplified form as an introductory prelude to the more detailed description provided below. 
     To overcome the limitation described above, and to overcome other limitations that will be apparent upon reading and understanding the present specification, aspects described herein are directed towards methods and systems for converting devices as input sources for a virtual session. 
     In accordance with one or more embodiments of the disclosure, a method may include establishing, via a wireless network, a session between a primary client device and a server, the primary client device being associated with a plurality of secondary client devices, selecting one or more devices, among the primary client device and the plurality of secondary client devices, based on a type of the session, as one or more input sources for the session, and causing the selected one or more devices to execute one or more virtual applications for using the selected one or more devices to receive an input. 
     In one or more instances, the selecting one or more devices may include identifying the type of the session based on an operating system or an application associated with the session, detecting one or more features of the primary client device and the plurality of secondary client devices, and selecting the one or more devices based on the identified type of the session and the detected one or more features. In one or more instances, the one or more features may include a device type, a screen size, a screen resolution, touchpoints, a touch resolution, and/or a latency touch response. 
     In one or more instances, the selecting one or more devices may include selecting a single device of the primary client device and the plurality of secondary client devices, the single device for providing one or more graphical user interfaces. In one or more instances, the selecting one or more devices may include selecting a first device and a second device of the primary client device and the plurality of secondary client devices, the first device for providing a first graphical user interface and the second device for providing a second graphical user interface, the first device having a screen size bigger than a screen size of the second device. 
     In one or more instances, the causing the selected one or more devices may include converting screens of the selected one or more devices to a virtual keyboard, a virtual touch pad, a virtual calculator, and/or a virtual drawing board. In one or more instances, the causing the selected one or more devices may include detecting a location of the primary client device, and detecting a preference setting of the primary client device. 
     In one or more instances, the causing the selected one or more devices may include converting, based on the location and/or the preference setting, screens of the selected one or more devices to a virtual keyboard, a virtual touch pad, a virtual calculator, and/or a virtual drawing board. In one or more instances, the method may further include detecting the plurality of secondary client devices via the established session, and selecting one of the primary client device and the plurality of secondary client devices for casting session display. In one or more instances, the selecting one of the primary client device and the plurality of secondary client devices may include comparing screen sizes of the primary client device and the plurality of secondary client devices, and selecting the one having the biggest screen size for casting the session display. 
     These and additional aspects will be appreciated with the benefit of the disclosures discussed in further detail below. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       A more complete understanding of aspects described herein and the advantages thereof may be acquired by referring to the following description in consideration of the accompanying drawings, in which like reference numbers indicate like features, and wherein: 
         FIG.  1    depicts an illustrative computer system architecture that may be used in accordance with one or more illustrative aspects described herein. 
         FIG.  2    depicts an illustrative remote-access system architecture that may be used in accordance with one or more illustrative aspects described herein. 
         FIG.  3    depicts an illustrative virtualized system architecture that may be used in accordance with one or more illustrative aspects described herein. 
         FIG.  4    depicts an illustrative cloud-based system architecture that may be used in accordance with one or more illustrative aspects described herein. 
         FIG.  5    depicts an illustrative enterprise mobility management system. 
         FIG.  6    depicts another illustrative enterprise mobility management system. 
         FIG.  7    depicts an example of a remote-access environment. 
         FIG.  8    depicts examples of selecting and configuring client devices as input sources. 
         FIG.  9    depicts an example of client devices configured as input sources. 
         FIG.  10    depicts an example of message sequences between client devices and computing device. 
         FIG.  11    depicts an example of a session process. 
         FIG.  12    depicts an example of a set-up input source process. 
     
    
    
     DETAILED DESCRIPTION 
     In the following description of the various embodiments, reference is made to the accompanying drawings identified above and which form a part hereof, and in which is shown by way of illustration various embodiments in which aspects described herein may be practiced. It is to be understood that other embodiments may be utilized and structural and functional modifications may be made without departing from the scope described herein. Various aspects are capable of other embodiments and of being practiced or being carried out in various different ways. 
     As a general introduction to the subject matter described in more detail below, aspects described herein are directed towards establishing a virtual session environment with one or more devices being automatically being set up as virtual input sources. A server may automatically detect one or more devices available and set up the one or more devices as virtual input sources for the virtual session. The server may control and/or restrict flows of data among the one or more devices by uniquely identifying each device. In such manner, the server may securely and effectively utilize available devices as virtual input sources for a user. As a result, the user may make the most or better use of the available devices to improve the user&#39;s remote work experience over virtual sessions without additional hardware. 
     It is to be understood that the phraseology and terminology used herein are for the purpose of description and should not be regarded as limiting. Rather, the phrases and terms used herein are to be given their broadest interpretation and meaning. The use of “including” and “comprising” and variations thereof is meant to encompass the items listed thereafter and equivalents thereof as well as additional items and equivalents thereof. The use of the terms “mounted,” “connected,” “coupled,” “positioned,” “engaged” and similar terms, is meant to include both direct and indirect mounting, connecting, coupling, positioning and engaging. 
     Computing Architecture 
     Computer software, hardware, and networks may be utilized in a variety of different system environments, including standalone, networked, remote-access (also known as remote desktop), virtualized, and/or cloud-based environments, among others.  FIG.  1    illustrates one example of a system architecture and data processing device that may be used to implement one or more illustrative aspects described herein in a standalone and/or networked environment. Various network nodes  103 ,  105 ,  107 , and  109  may be interconnected via a wide area network (WAN)  101 , such as the Internet. Other networks may also or alternatively be used, including private intranets, corporate networks, local area networks (LAN), metropolitan area networks (MAN), wireless networks, personal networks (PAN), and the like. Network  101  is for illustration purposes and may be replaced with fewer or additional computer networks. A local area network  133  may have one or more of any known LAN topology and may use one or more of a variety of different protocols, such as Ethernet. Devices  103 ,  105 ,  107 , and  109  and other devices (not shown) may be connected to one or more of the networks via twisted pair wires, coaxial cable, fiber optics, radio waves, or other communication media. 
     The term “network” as used herein and depicted in the drawings refers not only to systems in which remote storage devices are coupled together via one or more communication paths, but also to stand-alone devices that may be coupled, from time to time, to such systems that have storage capability. Consequently, the term “network” includes not only a “physical network” but also a “content network,” which is comprised of the data—attributable to a single entity—which resides across all physical networks. 
     The components may include data server  103 , web server  105 , and client computers  107 ,  109 . Data server  103  provides overall access, control and administration of databases and control software for performing one or more illustrative aspects describe herein. Data server  103  may be connected to web server  105  through which users interact with and obtain data as requested. Alternatively, data server  103  may act as a web server itself and be directly connected to the Internet. Data server  103  may be connected to web server  105  through the local area network  133 , the wide area network  101  (e.g., the Internet), via direct or indirect connection, or via some other network. Users may interact with the data server  103  using remote computers  107 ,  109 , e.g., using a web browser to connect to the data server  103  via one or more externally exposed web sites hosted by web server  105 . Client computers  107 ,  109  may be used in concert with data server  103  to access data stored therein, or may be used for other purposes. For example, from client device  107  a user may access web server  105  using an Internet browser, as is known in the art, or by executing a software application that communicates with web server  105  and/or data server  103  over a computer network (such as the Internet). 
     Servers and applications may be combined on the same physical machines, and retain separate virtual or logical addresses, or may reside on separate physical machines.  FIG.  1    illustrates just one example of a network architecture that may be used, and those of skill in the art will appreciate that the specific network architecture and data processing devices used may vary, and are secondary to the functionality that they provide, as further described herein. For example, services provided by web server  105  and data server  103  may be combined on a single server. 
     Each component  103 ,  105 ,  107 ,  109  may be any type of known computer, server, or data processing device. Data server  103 , e.g., may include a processor  111  controlling overall operation of the data server  103 . Data server  103  may further include random access memory (RAM)  113 , read only memory (ROM)  115 , network interface  117 , input/output interfaces  119  (e.g., keyboard, mouse, display, printer, etc.), and memory  121 . Input/output (I/O)  119  may include a variety of interface units and drives for reading, writing, displaying, and/or printing data or files. Memory  121  may further store operating system software  123  for controlling overall operation of the data processing device  103 , control logic  125  for instructing data server  103  to perform aspects described herein, and other application software  127  providing secondary, support, and/or other functionality which may or might not be used in conjunction with aspects described herein. The control logic  125  may also be referred to herein as the data server software  125 . Functionality of the data server software  125  may refer to operations or decisions made automatically based on rules coded into the control logic  125 , made manually by a user providing input into the system, and/or a combination of automatic processing based on user input (e.g., queries, data updates, etc.). 
     Memory  121  may also store data used in performance of one or more aspects described herein, including a first database  129  and a second database  131 . In some embodiments, the first database  129  may include the second database  131  (e.g., as a separate table, report, etc.). That is, the information can be stored in a single database, or separated into different logical, virtual, or physical databases, depending on system design. Devices  105 ,  107 , and  109  may have similar or different architecture as described with respect to device  103 . Those of skill in the art will appreciate that the functionality of data processing device  103  (or device  105 ,  107 , or  109 ) as described herein may be spread across multiple data processing devices, for example, to distribute processing load across multiple computers, to segregate transactions based on geographic location, user access level, quality of service (QoS), etc. 
     One or more aspects may be embodied in computer-usable or readable data and/or computer-executable instructions, such as in one or more program modules, executed by one or more computers or other devices as described herein. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types when executed by a processor in a computer or other device. The modules may be written in a source code programming language that is subsequently compiled for execution, or may be written in a scripting language such as (but not limited to) HyperText Markup Language (HTML) or Extensible Markup Language (XML). The computer executable instructions may be stored on a computer readable medium such as a nonvolatile storage device. Any suitable computer readable storage media may be utilized, including hard disks, CD-ROMs, optical storage devices, magnetic storage devices, solid state storage devices, and/or any combination thereof. In addition, various transmission (non-storage) media representing data or events as described herein may be transferred between a source and a destination in the form of electromagnetic waves traveling through signal-conducting media such as metal wires, optical fibers, and/or wireless transmission media (e.g., air and/or space). Various aspects described herein may be embodied as a method, a data processing system, or a computer program product. Therefore, various functionalities may be embodied in whole or in part in software, firmware, and/or hardware or hardware equivalents such as integrated circuits, field programmable gate arrays (FPGA), and the like. Particular data structures may be used to more effectively implement one or more aspects described herein, and such data structures are contemplated within the scope of computer executable instructions and computer-usable data described herein. 
     With further reference to  FIG.  2   , one or more aspects described herein may be implemented in a remote-access environment.  FIG.  2    depicts an example system architecture including a computing device  201  in an illustrative computing environment  200  that may be used according to one or more illustrative aspects described herein. Computing device  201  may be used as a server  206   a  in a single-server or multi-server desktop virtualization system (e.g., a remote access or cloud system) and can be configured to provide virtual machines for client access devices. The computing device  201  may have a processor  203  for controlling overall operation of the device  201  and its associated components, including RAM  205 , ROM  207 , Input/Output (I/O) module  209 , and memory  215 . 
     I/O module  209  may include a mouse, keypad, touch screen, scanner, optical reader, and/or stylus (or other input device(s)) through which a user of computing device  201  may provide input, and may also include one or more of a speaker for providing audio output and one or more of a video display device for providing textual, audiovisual, and/or graphical output. Software may be stored within memory  215  and/or other storage to provide instructions to processor  203  for configuring computing device  201  into a special purpose computing device in order to perform various functions as described herein. For example, memory  215  may store software used by the computing device  201 , such as an operating system  217 , application programs  219 , and an associated database  221 . 
     Computing device  201  may operate in a networked environment supporting connections to one or more remote computers, such as terminals  240  (also referred to as client devices and/or client machines). The terminals  240  may be personal computers, mobile devices, laptop computers, tablets, or servers that include many or all of the elements described above with respect to the computing device  103  or  201 . The network connections depicted in  FIG.  2    include a local area network (LAN)  225  and a wide area network (WAN)  229 , but may also include other networks. When used in a LAN networking environment, computing device  201  may be connected to the LAN  225  through a network interface or adapter  223 . When used in a WAN networking environment, computing device  201  may include a modem or other wide area network interface  227  for establishing communications over the WAN  229 , such as computer network  230  (e.g., the Internet). It will be appreciated that the network connections shown are illustrative and other means of establishing a communications link between the computers may be used. Computing device  201  and/or terminals  240  may also be mobile terminals (e.g., mobile phones, smartphones, personal digital assistants (PDAs), notebooks, etc.) including various other components, such as a battery, speaker, and antennas (not shown). 
     Aspects described herein may also be operational with numerous other general purpose or special purpose computing system environments or configurations. Examples of other computing systems, environments, and/or configurations that may be suitable for use with aspects described herein include, but are not limited to, personal computers, server computers, hand-held or laptop devices, multiprocessor systems, microprocessor-based systems, set top boxes, programmable consumer electronics, network personal computers (PCs), minicomputers, mainframe computers, distributed computing environments that include any of the above systems or devices, and the like. 
     As shown in  FIG.  2   , one or more client devices  240  may be in communication with one or more servers  206   a - 206   n  (generally referred to herein as “server(s)  206 ”). In one embodiment, the computing environment  200  may include a network appliance installed between the server(s)  206  and client machine(s)  240 . The network appliance may manage client/server connections, and in some cases can load balance client connections amongst a plurality of backend servers  206 . 
     The client machine(s)  240  may in some embodiments be referred to as a single client machine  240  or a single group of client machines  240 , while server(s)  206  may be referred to as a single server  206  or a single group of servers  206 . In one embodiment a single client machine  240  communicates with more than one server  206 , while in another embodiment a single server  206  communicates with more than one client machine  240 . In yet another embodiment, a single client machine  240  communicates with a single server  206 . 
     A client machine  240  can, in some embodiments, be referenced by any one of the following non-exhaustive terms: client machine(s); client(s); client computer(s); client device(s); client computing device(s); local machine; remote machine; client node(s); endpoint(s); or endpoint node(s). The server  206 , in some embodiments, may be referenced by any one of the following non-exhaustive terms: server(s), local machine; remote machine; server farm(s), or host computing device(s). 
     In one embodiment, the client machine  240  may be a virtual machine. The virtual machine may be any virtual machine, while in some embodiments the virtual machine may be any virtual machine managed by a Type 1 or Type 2 hypervisor, for example, a hypervisor developed by Citrix Systems, IBM, VMware, or any other hypervisor. In some aspects, the virtual machine may be managed by a hypervisor, while in other aspects the virtual machine may be managed by a hypervisor executing on a server  206  or a hypervisor executing on a client  240 . 
     Some embodiments include a client device  240  that displays application output generated by an application remotely executing on a server  206  or other remotely located machine. In these embodiments, the client device  240  may execute a virtual machine receiver program or application to display the output in an application window, a browser, or other output window. In one example, the application is a desktop, while in other examples the application is an application that generates or presents a desktop. A desktop may include a graphical shell providing a user interface for an instance of an operating system in which local and/or remote applications can be integrated. Applications, as used herein, are programs that execute after an instance of an operating system (and, optionally, also the desktop) has been loaded. 
     The server  206 , in some embodiments, uses a remote presentation protocol or other program to send data to a thin-client or remote-display application executing on the client to present display output generated by an application executing on the server  206 . The thin-client or remote-display protocol can be any one of the following non-exhaustive list of protocols: the Independent Computing Architecture (ICA) protocol developed by Citrix Systems, Inc. of Ft. Lauderdale, Fla.; or the Remote Desktop Protocol (RDP) manufactured by the Microsoft Corporation of Redmond, Wash. 
     A remote computing environment may include more than one server  206   a - 206   n  such that the servers  206   a - 206   n  are logically grouped together into a server farm  206 , for example, in a cloud computing environment. The server farm  206  may include servers  206  that are geographically dispersed while logically grouped together, or servers  206  that are located proximate to each other while logically grouped together. Geographically dispersed servers  206   a - 206   n  within a server farm  206  can, in some embodiments, communicate using a WAN (wide), MAN (metropolitan), or LAN (local), where different geographic regions can be characterized as: different continents; different regions of a continent; different countries; different states; different cities; different campuses; different rooms; or any combination of the preceding geographical locations. In some embodiments the server farm  206  may be administered as a single entity, while in other embodiments the server farm  206  can include multiple server farms. 
     In some embodiments, a server farm may include servers  206  that execute a substantially similar type of operating system platform (e.g., WINDOWS, UNIX, LINUX, iOS, ANDROID, etc.) In other embodiments, server farm  206  may include a first group of one or more servers that execute a first type of operating system platform, and a second group of one or more servers that execute a second type of operating system platform. 
     Server  206  may be configured as any type of server, as needed, e.g., a file server, an application server, a web server, a proxy server, an appliance, a network appliance, a gateway, an application gateway, a gateway server, a virtualization server, a deployment server, a Secure Sockets Layer (SSL) VPN server, a firewall, a web server, an application server or as a master application server, a server executing an active directory, or a server executing an application acceleration program that provides firewall functionality, application functionality, or load balancing functionality. Other server types may also be used. 
     Some embodiments include a first server  206   a  that receives requests from a client machine  240 , forwards the request to a second server  206   b  (not shown), and responds to the request generated by the client machine  240  with a response from the second server  206   b  (not shown.) First server  206   a  may acquire an enumeration of applications available to the client machine  240  as well as address information associated with an application server  206  hosting an application identified within the enumeration of applications. First server  206   a  can then present a response to the client&#39;s request using a web interface, and communicate directly with the client  240  to provide the client  240  with access to an identified application. One or more clients  240  and/or one or more servers  206  may transmit data over network  230 , e.g., network  101 . 
       FIG.  3    shows a high-level architecture of an illustrative desktop virtualization system. As shown, the desktop virtualization system may be single-server or multi-server system, or cloud system, including at least one virtualization server  301  configured to provide virtual desktops and/or virtual applications to one or more client access devices  240 . As used herein, a desktop refers to a graphical environment or space in which one or more applications may be hosted and/or executed. A desktop may include a graphical shell providing a user interface for an instance of an operating system in which local and/or remote applications can be integrated. Applications may include programs that execute after an instance of an operating system (and, optionally, also the desktop) has been loaded. Each instance of the operating system may be physical (e.g., one operating system per device) or virtual (e g , many instances of an OS running on a single device). Each application may be executed on a local device, or executed on a remotely located device (e.g., remoted). 
     A computer device  301  may be configured as a virtualization server in a virtualization environment, for example, a single-server, multi-server, or cloud computing environment. Virtualization server  301  illustrated in  FIG.  3    can be deployed as and/or implemented by one or more embodiments of the server  206  illustrated in  FIG.  2    or by other known computing devices. Included in virtualization server  301  is a hardware layer that can include one or more physical disks  304 , one or more physical devices  306 , one or more physical processors  308 , and one or more physical memories  316 . In some embodiments, firmware  312  can be stored within a memory element in the physical memory  316  and can be executed by one or more of the physical processors  308 . Virtualization server  301  may further include an operating system  314  that may be stored in a memory element in the physical memory  316  and executed by one or more of the physical processors  308 . Still further, a hypervisor  302  may be stored in a memory element in the physical memory  316  and can be executed by one or more of the physical processors  308 . 
     Executing on one or more of the physical processors  308  may be one or more virtual machines  332 A-C (generally  332 ). Each virtual machine  332  may have a virtual disk  326 A-C and a virtual processor  328 A-C. In some embodiments, a first virtual machine  332 A may execute, using a virtual processor  328 A, a control program  320  that includes a tools stack  324 . Control program  320  may be referred to as a control virtual machine, Dom0, Domain 0, or other virtual machine used for system administration and/or control. In some embodiments, one or more virtual machines  332 B-C can execute, using a virtual processor  328 B-C, a guest operating system  330 A-B. 
     Virtualization server  301  may include a hardware layer  310  with one or more pieces of hardware that communicate with the virtualization server  301 . In some embodiments, the hardware layer  310  can include one or more physical disks  304 , one or more physical devices  306 , one or more physical processors  308 , and one or more physical memory  316 . Physical components  304 ,  306 ,  308 , and  316  may include, for example, any of the components described above. Physical devices  306  may include, for example, a network interface card, a video card, a keyboard, a mouse, an input device, a monitor, a display device, speakers, an optical drive, a storage device, a universal serial bus connection, a printer, a scanner, a network element (e.g., router, firewall, network address translator, load balancer, virtual private network (VPN) gateway, Dynamic Host Configuration Protocol (DHCP) router, etc.), or any device connected to or communicating with virtualization server  301 . Physical memory  316  in the hardware layer  310  may include any type of memory. Physical memory  316  may store data, and in some embodiments may store one or more programs, or set of executable instructions.  FIG.  3    illustrates an embodiment where firmware  312  is stored within the physical memory  316  of virtualization server  301 . Programs or executable instructions stored in the physical memory  316  can be executed by the one or more processors  308  of virtualization server  301 . 
     Virtualization server  301  may also include a hypervisor  302 . In some embodiments, hypervisor  302  may be a program executed by processors  308  on virtualization server  301  to create and manage any number of virtual machines  332 . Hypervisor  302  may be referred to as a virtual machine monitor, or platform virtualization software. In some embodiments, hypervisor  302  can be any combination of executable instructions and hardware that monitors virtual machines executing on a computing machine. Hypervisor  302  may be Type 2 hypervisor, where the hypervisor executes within an operating system  314  executing on the virtualization server  301 . Virtual machines may then execute at a level above the hypervisor  302 . In some embodiments, the Type 2 hypervisor may execute within the context of a user&#39;s operating system such that the Type 2 hypervisor interacts with the user&#39;s operating system. In other embodiments, one or more virtualization servers  301  in a virtualization environment may instead include a Type 1 hypervisor (not shown). A Type 1 hypervisor may execute on the virtualization server  301  by directly accessing the hardware and resources within the hardware layer  310 . That is, while a Type 2 hypervisor  302  accesses system resources through a host operating system  314 , as shown, a Type 1 hypervisor may directly access all system resources without the host operating system  314 . A Type 1 hypervisor may execute directly on one or more physical processors  308  of virtualization server  301 , and may include program data stored in the physical memory  316 . 
     Hypervisor  302 , in some embodiments, can provide virtual resources to operating systems  330  or control programs  320  executing on virtual machines  332  in any manner that simulates the operating systems  330  or control programs  320  having direct access to system resources. System resources can include, but are not limited to, physical devices  306 , physical disks  304 , physical processors  308 , physical memory  316 , and any other component included in hardware layer  310  of the virtualization server  301 . Hypervisor  302  may be used to emulate virtual hardware, partition physical hardware, virtualize physical hardware, and/or execute virtual machines that provide access to computing environments. In still other embodiments, hypervisor  302  may control processor scheduling and memory partitioning for a virtual machine  332  executing on virtualization server  301 . Hypervisor  302  may include those manufactured by VMWare, Inc., of Palo Alto, Calif.; HyperV, VirtualServer or virtual PC hypervisors provided by Microsoft, or others. In some embodiments, virtualization server  301  may execute a hypervisor  302  that creates a virtual machine platform on which guest operating systems may execute. In these embodiments, the virtualization server  301  may be referred to as a host server. An example of such a virtualization server is the Citrix Hypervisor provided by Citrix Systems, Inc., of Fort Lauderdale, Fla. 
     Hypervisor  302  may create one or more virtual machines  332 B-C (generally  332 ) in which guest operating systems  330  execute. In some embodiments, hypervisor  302  may load a virtual machine image to create a virtual machine  332 . In other embodiments, the hypervisor  302  may execute a guest operating system  330  within virtual machine  332 . In still other embodiments, virtual machine  332  may execute guest operating system  330 . 
     In addition to creating virtual machines  332 , hypervisor  302  may control the execution of at least one virtual machine  332 . In other embodiments, hypervisor  302  may present at least one virtual machine  332  with an abstraction of at least one hardware resource provided by the virtualization server  301  (e.g., any hardware resource available within the hardware layer  310 ). In other embodiments, hypervisor  302  may control the manner in which virtual machines  332  access physical processors  308  available in virtualization server  301 . Controlling access to physical processors  308  may include determining whether a virtual machine  332  should have access to a processor  308 , and how physical processor capabilities are presented to the virtual machine  332 . 
     As shown in  FIG.  3   , virtualization server  301  may host or execute one or more virtual machines  332 . A virtual machine  332  is a set of executable instructions that, when executed by a processor  308 , may imitate the operation of a physical computer such that the virtual machine  332  can execute programs and processes much like a physical computing device. While  FIG.  3    illustrates an embodiment where a virtualization server  301  hosts three virtual machines  332 , in other embodiments virtualization server  301  can host any number of virtual machines  332 . Hypervisor  302 , in some embodiments, may provide each virtual machine  332  with a unique virtual view of the physical hardware, memory, processor, and other system resources available to that virtual machine  332 . In some embodiments, the unique virtual view can be based on one or more of virtual machine permissions, application of a policy engine to one or more virtual machine identifiers, a user accessing a virtual machine, the applications executing on a virtual machine, networks accessed by a virtual machine, or any other desired criteria. For instance, hypervisor  302  may create one or more unsecure virtual machines  332  and one or more secure virtual machines  332 . Unsecure virtual machines  332  may be prevented from accessing resources, hardware, memory locations, and programs that secure virtual machines  332  may be permitted to access. In other embodiments, hypervisor  302  may provide each virtual machine  332  with a substantially similar virtual view of the physical hardware, memory, processor, and other system resources available to the virtual machines  332 . 
     Each virtual machine  332  may include a virtual disk  326 A-C (generally  326 ) and a virtual processor  328 A-C (generally  328 .) The virtual disk  326 , in some embodiments, is a virtualized view of one or more physical disks  304  of the virtualization server  301 , or a portion of one or more physical disks  304  of the virtualization server  301 . The virtualized view of the physical disks  304  can be generated, provided, and managed by the hypervisor  302 . In some embodiments, hypervisor  302  provides each virtual machine  332  with a unique view of the physical disks  304 . Thus, in these embodiments, the particular virtual disk  326  included in each virtual machine  332  can be unique when compared with the other virtual disks  326 . 
     A virtual processor  328  can be a virtualized view of one or more physical processors  308  of the virtualization server  301 . In some embodiments, the virtualized view of the physical processors  308  can be generated, provided, and managed by hypervisor  302 . In some embodiments, virtual processor  328  has substantially all of the same characteristics of at least one physical processor  308 . In other embodiments, virtual processor  308  provides a modified view of physical processors  308  such that at least some of the characteristics of the virtual processor  328  are different than the characteristics of the corresponding physical processor  308 . 
     With further reference to  FIG.  4   , some aspects described herein may be implemented in a cloud-based environment.  FIG.  4    illustrates an example of a cloud computing environment (or cloud system)  400 . As seen in  FIG.  4   , client computers  411 - 414  may communicate with a cloud management server  410  to access the computing resources (e.g., host servers  403   a - 403   b  (generally referred herein as “host servers  403 ”), storage resources  404   a - 404   b  (generally referred herein as “storage resources  404 ”), and network elements  405   a - 405   b  (generally referred herein as “network resources  405 ”)) of the cloud system. 
     Management server  410  may be implemented on one or more physical servers. The management server  410  may run, for example, Citrix Cloud by Citrix Systems, Inc. of Ft. Lauderdale, Fla., or OPENSTACK, among others. Management server  410  may manage various computing resources, including cloud hardware and software resources, for example, host computers  403 , data storage devices  404 , and networking devices  405 . The cloud hardware and software resources may include private and/or public components. For example, a cloud may be configured as a private cloud to be used by one or more particular customers or client computers  411 - 414  and/or over a private network. In other embodiments, public clouds or hybrid public-private clouds may be used by other customers over an open or hybrid networks. 
     Management server  410  may be configured to provide user interfaces through which cloud operators and cloud customers may interact with the cloud system  400 . For example, the management server  410  may provide a set of application programming interfaces (APIs) and/or one or more cloud operator console applications (e.g., web-based or standalone applications) with user interfaces to allow cloud operators to manage the cloud resources, configure the virtualization layer, manage customer accounts, and perform other cloud administration tasks. The management server  410  also may include a set of APIs and/or one or more customer console applications with user interfaces configured to receive cloud computing requests from end users via client computers  411 - 414 , for example, requests to create, modify, or destroy virtual machines within the cloud. Client computers  411 - 414  may connect to management server  410  via the Internet or some other communication network, and may request access to one or more of the computing resources managed by management server  410 . In response to client requests, the management server  410  may include a resource manager configured to select and provision physical resources in the hardware layer of the cloud system based on the client requests. For example, the management server  410  and additional components of the cloud system may be configured to provision, create, and manage virtual machines and their operating environments (e.g., hypervisors, storage resources, services offered by the network elements, etc.) for customers at client computers  411 - 414 , over a network (e.g., the Internet), providing customers with computational resources, data storage services, networking capabilities, and computer platform and application support. Cloud systems also may be configured to provide various specific services, including security systems, development environments, user interfaces, and the like. 
     Certain clients  411 - 414  may be related, for example, to different client computers creating virtual machines on behalf of the same end user, or different users affiliated with the same company or organization. In other examples, certain clients  411 - 414  may be unrelated, such as users affiliated with different companies or organizations. For unrelated clients, information on the virtual machines or storage of any one user may be hidden from other users. 
     Referring now to the physical hardware layer of a cloud computing environment, availability zones  401 - 402  (or zones) may refer to a collocated set of physical computing resources. Zones may be geographically separated from other zones in the overall cloud of computing resources. For example, zone  401  may be a first cloud datacenter located in California, and zone  402  may be a second cloud datacenter located in Florida. Management server  410  may be located at one of the availability zones, or at a separate location. Each zone may include an internal network that interfaces with devices that are outside of the zone, such as the management server  410 , through a gateway. End users of the cloud (e.g., clients  411 - 414 ) might or might not be aware of the distinctions between zones. For example, an end user may request the creation of a virtual machine having a specified amount of memory, processing power, and network capabilities. The management server  410  may respond to the user&#39;s request and may allocate the resources to create the virtual machine without the user knowing whether the virtual machine was created using resources from zone  401  or zone  402 . In other examples, the cloud system may allow end users to request that virtual machines (or other cloud resources) are allocated in a specific zone or on specific resources  403 - 405  within a zone. 
     In this example, each zone  401 - 402  may include an arrangement of various physical hardware components (or computing resources)  403 - 405 , for example, physical hosting resources (or processing resources), physical network resources, physical storage resources, switches, and additional hardware resources that may be used to provide cloud computing services to customers. The physical hosting resources in a cloud zone  401 - 402  may include one or more computer servers  403 , such as the virtualization servers  301  described above, which may be configured to create and host virtual machine instances. The physical network resources in a cloud zone  401  or  402  may include one or more network elements  405  (e.g., network service providers) comprising hardware and/or software configured to provide a network service to cloud customers, such as firewalls, network address translators, load balancers, virtual private network (VPN) gateways, Dynamic Host Configuration Protocol (DHCP) routers, and the like. The storage resources in the cloud zone  401 - 402  may include storage disks (e.g., solid state drives (SSDs), magnetic hard disks, etc.) and other storage devices. 
     The example cloud computing environment shown in  FIG.  4    also may include a virtualization layer (e.g., as shown in  FIGS.  1 - 3   ) with additional hardware and/or software resources configured to create and manage virtual machines and provide other services to customers using the physical resources in the cloud. The virtualization layer may include hypervisors, as described above in  FIG.  3   , along with other components to provide network virtualizations, storage virtualizations, etc. The virtualization layer may be as a separate layer from the physical resource layer, or may share some or all of the same hardware and/or software resources with the physical resource layer. For example, the virtualization layer may include a hypervisor installed in each of the virtualization servers  403  with the physical computing resources. Known cloud systems may alternatively be used, e.g., WINDOWS AZURE (Microsoft Corporation of Redmond, Wash.), AMAZON EC2 (Amazon.com Inc. of Seattle, Wash.), IBM BLUE CLOUD (IBM Corporation of Armonk, N.Y.), or others. 
     Enterprise Mobility Management Architecture 
       FIG.  5    represents an enterprise mobility technical architecture  500  for use in a “Bring Your Own Device” (BYOD) environment. The architecture enables a user of a mobile device  502  to both access enterprise or personal resources from a mobile device  502  and use the mobile device  502  for personal use. The user may access such enterprise resources  504  or enterprise services  508  using a mobile device  502  that is purchased by the user or a mobile device  502  that is provided by the enterprise to the user. The user may utilize the mobile device  502  for business use only or for business and personal use. The mobile device  502  may run an iOS operating system, an Android operating system, or the like. The enterprise may choose to implement policies to manage the mobile device  502 . The policies may be implemented through a firewall or gateway in such a way that the mobile device  502  may be identified, secured or security verified, and provided selective or full access to the enterprise resources (e.g.,  504  and  508 .) The policies may be mobile device management policies, mobile application management policies, mobile data management policies, or some combination of mobile device, application, and data management policies. A mobile device  502  that is managed through the application of mobile device management policies may be referred to as an enrolled device. 
     In some embodiments, the operating system of the mobile device  502  may be separated into a managed partition  510  and an unmanaged partition  512 . The managed partition  510  may have policies applied to it to secure the applications running on and data stored in the managed partition  510 . The applications running on the managed partition  510  may be secure applications. In other embodiments, all applications may execute in accordance with a set of one or more policy files received separate from the application, and which define one or more security parameters, features, resource restrictions, and/or other access controls that are enforced by the mobile device management system when that application is executing on the mobile device  502 . By operating in accordance with their respective policy file(s), each application may be allowed or restricted from communications with one or more other applications and/or resources, thereby creating a virtual partition. Thus, as used herein, a partition may refer to a physically partitioned portion of memory (physical partition), a logically partitioned portion of memory (logical partition), and/or a virtual partition created as a result of enforcement of one or more policies and/or policy files across multiple applications as described herein (virtual partition). Stated differently, by enforcing policies on managed applications, those applications may be restricted to only be able to communicate with other managed applications and trusted enterprise resources, thereby creating a virtual partition that is not accessible by unmanaged applications and devices. 
     The secure applications may be email applications, web browsing applications, software-as-a-service (SaaS) access applications, Windows Application access applications, and the like. The secure applications may be secure native applications  514 , secure remote applications  522  executed by a secure application launcher  518 , virtualization applications  526  executed by a secure application launcher  518 , and the like. The secure native applications  514  may be wrapped by a secure application wrapper  520 . The secure application wrapper  520  may include integrated policies that are executed on the mobile device  502  when the secure native application  514  is executed on the mobile device  502 . The secure application wrapper  520  may include meta-data that points the secure native application  514  running on the mobile device  502  to the resources hosted at the enterprise (e.g.,  504  and  508 ) that the secure native application  514  may require to complete the task requested upon execution of the secure native application  514 . The secure remote applications  522  executed by a secure application launcher  518  may be executed within the secure application launcher  518 . The virtualization applications  526  executed by a secure application launcher  518  may utilize resources on the mobile device  502 , at the enterprise resources  504 , and the like. The resources used on the mobile device  502  by the virtualization applications  526  executed by a secure application launcher  518  may include user interaction resources, processing resources, and the like. The user interaction resources may be used to collect and transmit keyboard input, mouse input, camera input, tactile input, audio input, visual input, gesture input, and the like. The processing resources may be used to present a user interface, process data received from the enterprise resources  504 , and the like. The resources used at the enterprise resources  504  by the virtualization applications  526  executed by a secure application launcher  518  may include user interface generation resources, processing resources, and the like. The user interface generation resources may be used to assemble a user interface, modify a user interface, refresh a user interface, and the like. The processing resources may be used to create information, read information, update information, delete information, and the like. For example, the virtualization application  526  may record user interactions associated with a graphical user interface (GUI) and communicate them to a server application where the server application will use the user interaction data as an input to the application operating on the server. In such an arrangement, an enterprise may elect to maintain the application on the server side as well as data, files, etc. associated with the application. While an enterprise may elect to “mobilize” some applications in accordance with the principles herein by securing them for deployment on the mobile device  502 , this arrangement may also be elected for certain applications. For example, while some applications may be secured for use on the mobile device  502 , others might not be prepared or appropriate for deployment on the mobile device  502  so the enterprise may elect to provide the mobile user access to the unprepared applications through virtualization techniques. As another example, the enterprise may have large complex applications with large and complex data sets (e.g., material resource planning applications) where it would be very difficult, or otherwise undesirable, to customize the application for the mobile device  502  so the enterprise may elect to provide access to the application through virtualization techniques. As yet another example, the enterprise may have an application that maintains highly secured data (e.g., human resources data, customer data, engineering data) that may be deemed by the enterprise as too sensitive for even the secured mobile environment so the enterprise may elect to use virtualization techniques to permit mobile access to such applications and data. An enterprise may elect to provide both fully secured and fully functional applications on the mobile device  502  as well as a virtualization application  526  to allow access to applications that are deemed more properly operated on the server side. In an embodiment, the virtualization application  526  may store some data, files, etc. on the mobile device  502  in one of the secure storage locations. An enterprise, for example, may elect to allow certain information to be stored on the mobile device  502  while not permitting other information. 
     In connection with the virtualization application  526 , as described herein, the mobile device  502  may have a virtualization application  526  that is designed to present GUIs and then record user interactions with the GUI. The virtualization application  526  may communicate the user interactions to the server side to be used by the server side application as user interactions with the application. In response, the application on the server side may transmit back to the mobile device  502  a new GUI. For example, the new GUI may be a static page, a dynamic page, an animation, or the like, thereby providing access to remotely located resources. 
     The secure applications  514  may access data stored in a secure data container  528  in the managed partition  510  of the mobile device  502 . The data secured in the secure data container may be accessed by the secure native applications  514 , secure remote applications  522  executed by a secure application launcher  518 , virtualization applications  526  executed by a secure application launcher  518 , and the like. The data stored in the secure data container  528  may include files, databases, and the like. The data stored in the secure data container  528  may include data restricted to a specific secure application  530 , shared among secure applications  532 , and the like. Data restricted to a secure application may include secure general data  534  and highly secure data  538 . Secure general data may use a strong form of encryption such as Advanced Encryption Standard (AES) 128-bit encryption or the like, while highly secure data  538  may use a very strong form of encryption such as AES 256-bit encryption. Data stored in the secure data container  528  may be deleted from the mobile device  502  upon receipt of a command from the device manager  524 . The secure applications (e.g.,  514 ,  522 , and  526 ) may have a dual-mode option  540 . The dual mode option  540  may present the user with an option to operate the secured application in an unsecured or unmanaged mode. In an unsecured or unmanaged mode, the secure applications may access data stored in an unsecured data container  542  on the unmanaged partition  512  of the mobile device  502 . The data stored in an unsecured data container may be personal data  544 . The data stored in an unsecured data container  542  may also be accessed by unsecured applications  546  that are running on the unmanaged partition  512  of the mobile device  502 . The data stored in an unsecured data container  542  may remain on the mobile device  502  when the data stored in the secure data container  528  is deleted from the mobile device  502 . An enterprise may want to delete from the mobile device  502  selected or all data, files, and/or applications owned, licensed or controlled by the enterprise (enterprise data) while leaving or otherwise preserving personal data, files, and/or applications owned, licensed or controlled by the user (personal data). This operation may be referred to as a selective wipe. With the enterprise and personal data arranged in accordance to the aspects described herein, an enterprise may perform a selective wipe. 
     The mobile device  502  may connect to enterprise resources  504  and enterprise services  508  at an enterprise, to the public Internet  548 , and the like. The mobile device  502  may connect to enterprise resources  504  and enterprise services  508  through virtual private network connections. The virtual private network connections, also referred to as microVPN or application-specific VPN, may be specific to particular applications (as illustrated by microVPNs  550 , particular devices, particular secured areas on the mobile device (as illustrated by O/S VPN  552 ), and the like. For example, each of the wrapped applications in the secured area of the mobile device  502  may access enterprise resources through an application specific VPN such that access to the VPN would be granted based on attributes associated with the application, possibly in conjunction with user or device attribute information. The virtual private network connections may carry Microsoft Exchange traffic, Microsoft Active Directory traffic, HyperText Transfer Protocol (HTTP) traffic, HyperText Transfer Protocol Secure (HTTPS) traffic, application management traffic, and the like. The virtual private network connections may support and enable single-sign-on authentication processes  554 . The single-sign-on processes may allow a user to provide a single set of authentication credentials, which are then verified by an authentication service  558 . The authentication service  558  may then grant to the user access to multiple enterprise resources  504 , without requiring the user to provide authentication credentials to each individual enterprise resource  504 . 
     The virtual private network connections may be established and managed by an access gateway  560 . The access gateway  560  may include performance enhancement features that manage, accelerate, and improve the delivery of enterprise resources  504  to the mobile device  502 . The access gateway  560  may also re-route traffic from the mobile device  502  to the public Internet  548 , enabling the mobile device  502  to access publicly available and unsecured applications that run on the public Internet  548 . The mobile device  502  may connect to the access gateway via a transport network  562 . The transport network  562  may use one or more transport protocols and may be a wired network, wireless network, cloud network, local area network, metropolitan area network, wide area network, public network, private network, and the like. 
     The enterprise resources  504  may include email servers, file sharing servers, SaaS applications, Web application servers, Windows application servers, and the like. Email servers may include Exchange servers, Lotus Notes servers, and the like. File sharing servers may include ShareFile servers, and the like. SaaS applications may include Salesforce, and the like. Windows application servers may include any application server that is built to provide applications that are intended to run on a local Windows operating system, and the like. The enterprise resources  504  may be premise-based resources, cloud-based resources, and the like. The enterprise resources  504  may be accessed by the mobile device  502  directly or through the access gateway  560 . The enterprise resources  504  may be accessed by the mobile device  502  via the transport network  562 . 
     The enterprise services  508  may include authentication services  558 , threat detection services  564 , device manager services  524 , file sharing services  568 , policy manager services  570 , social integration services  572 , application controller services  574 , and the like. Authentication services  558  may include user authentication services, device authentication services, application authentication services, data authentication services, and the like. Authentication services  558  may use certificates. The certificates may be stored on the mobile device  502 , by the enterprise resources  504 , and the like. The certificates stored on the mobile device  502  may be stored in an encrypted location on the mobile device  502 , the certificate may be temporarily stored on the mobile device  502  for use at the time of authentication, and the like. Threat detection services  564  may include intrusion detection services, unauthorized access attempt detection services, and the like. Unauthorized access attempt detection services may include unauthorized attempts to access devices, applications, data, and the like. Device management services  524  may include configuration, provisioning, security, support, monitoring, reporting, and decommissioning services. File sharing services  568  may include file management services, file storage services, file collaboration services, and the like. Policy manager services  570  may include device policy manager services, application policy manager services, data policy manager services, and the like. Social integration services  572  may include contact integration services, collaboration services, integration with social networks such as Facebook, Twitter, and LinkedIn, and the like. Application controller services  574  may include management services, provisioning services, deployment services, assignment services, revocation services, wrapping services, and the like. 
     The enterprise mobility technical architecture  500  may include an application store  578 . The application store  578  may include unwrapped applications  580 , pre-wrapped applications  582 , and the like. Applications may be populated in the application store  578  from the application controller  574 . The application store  578  may be accessed by the mobile device  502  through the access gateway  560 , through the public Internet  548 , or the like. The application store  578  may be provided with an intuitive and easy to use user interface. 
     A software development kit  584  may provide a user the capability to secure applications selected by the user by wrapping the application as described previously in this description. An application that has been wrapped using the software development kit  584  may then be made available to the mobile device  502  by populating it in the application store  578  using the application controller  574 . 
     The enterprise mobility technical architecture  500  may include a management and analytics capability  588 . The management and analytics capability  588  may provide information related to how resources are used, how often resources are used, and the like. Resources may include devices, applications, data, and the like. How resources are used may include which devices download which applications, which applications access which data, and the like. How often resources are used may include how often an application has been downloaded, how many times a specific set of data has been accessed by an application, and the like. 
       FIG.  6    is another illustrative enterprise mobility management system  600 . Some of the components of the mobility management system  500  described above with reference to  FIG.  5    have been omitted for the sake of simplicity. The architecture of the system  600  depicted in  FIG.  6    is similar in many respects to the architecture of the system  500  described above with reference to  FIG.  5    and may include additional features not mentioned above. 
     In this case, the left hand side represents an enrolled mobile device  602  with a client agent  604 , which interacts with gateway server  606  (which includes Access Gateway and application controller functionality) to access various enterprise resources  608  and services  609  such as Exchange, Sharepoint, public-key infrastructure (PKI) Resources, Kerberos Resources, Certificate Issuance service, as shown on the right hand side above. Although not specifically shown, the mobile device  602  may also interact with an enterprise application store (StoreFront) for the selection and downloading of applications. 
     The client agent  604  acts as the UI (user interface) intermediary for Windows apps/desktops hosted in an Enterprise data center, which are accessed using the High-Definition User Experience (HDX)/ICA display remoting protocol. The client agent  604  also supports the installation and management of native applications on the mobile device  602 , such as native iOS or Android applications. For example, the managed applications  610  (mail, browser, wrapped application) shown in the figure above are all native applications that execute locally on the mobile device  602 . Client agent  604  and application management framework of this architecture act to provide policy driven management capabilities and features such as connectivity and SSO (single sign on) to enterprise resources/services  608 . The client agent  604  handles primary user authentication to the enterprise, normally to Access Gateway (AG)  606  with SSO to other gateway server components. The client agent  604  obtains policies from gateway server  606  to control the behavior of the managed applications  610  on the mobile device  602 . 
     The Secure InterProcess Communication (IPC) links  612  between the native applications  610  and client agent  604  represent a management channel, which may allow a client agent to supply policies to be enforced by the application management framework  614  “wrapping” each application. The IPC channel  612  may also allow client agent  604  to supply credential and authentication information that enables connectivity and SSO to enterprise resources  608 . Finally, the IPC channel  612  may allow the application management framework  614  to invoke user interface functions implemented by client agent  604 , such as online and offline authentication. 
     Communications between the client agent  604  and gateway server  606  are essentially an extension of the management channel from the application management framework  614  wrapping each native managed application  610 . The application management framework  614  may request policy information from client agent  604 , which in turn may request it from gateway server  606 . The application management framework  614  may request authentication, and client agent  604  may log into the gateway services part of gateway server  606  (for example, Citrix Gateway). Client agent  604  may also call supporting services on gateway server  606 , which may produce input material to derive encryption keys for the local data vaults  616 , or may provide client certificates which may enable direct authentication to PKI protected resources, as more fully explained below. 
     In more detail, the application management framework  614  “wraps” each managed application  610 . This may be incorporated via an explicit build step, or via a post-build processing step. The application management framework  614  may “pair” with client agent  604  on first launch of an application  610  to initialize the Secure IPC channel  612  and obtain the policy for that application. The application management framework  614  may enforce relevant portions of the policy that apply locally, such as the client agent login dependencies and some of the containment policies that restrict how local OS services may be used, or how they may interact with the managed application  610 . 
     The application management framework  614  may use services provided by client agent  604  over the Secure IPC channel  612  to facilitate authentication and internal network access. Key management for the private and shared data vaults  616  (containers) may be also managed by appropriate interactions between the managed applications  610  and client agent  604 . Vaults  616  may be available only after online authentication, or may be made available after offline authentication if allowed by policy. First use of vaults  616  may require online authentication, and offline access may be limited to at most the policy refresh period before online authentication is again required. 
     Network access to internal resources may occur directly from individual managed applications  610  through Access Gateway  606 . The application management framework  614  may be responsible for orchestrating the network access on behalf of each managed application  610 . Client agent  604  may facilitate these network connections by providing suitable time limited secondary credentials obtained following online authentication. Multiple modes of network connection may be used, such as reverse web proxy connections and end-to-end VPN-style tunnels  618 . 
     The Mail and Browser managed applications  610  have special status and may make use of facilities that might not be generally available to arbitrary wrapped applications. For example, the Mail application  610  may use a special background network access mechanism that allows it to access an Exchange server  608  over an extended period of time without requiring a full AG logon. The Browser application  610  may use multiple private data vaults  616  to segregate different kinds of data. 
     This architecture may support the incorporation of various other security features. For example, gateway server  606  (including its gateway services) in some cases may not need to validate active directory (AD) passwords. It can be left to the discretion of an enterprise whether an AD password may be used as an authentication factor for some users in some situations. Different authentication methods may be used if a user is online or offline (i.e., connected or not connected to a network). 
     Step up authentication is a feature wherein gateway server  606  may identify managed native applications  610  that are allowed to have access to highly classified data requiring strong authentication, and ensure that access to these applications is only permitted after performing appropriate authentication, even if this means a re-authentication is required by the user after a prior weaker level of login. 
     Another security feature of this solution is the encryption of the data vaults  616  (containers) on the mobile device  602 . The vaults  616  may be encrypted so that all on-device data including files, databases, and configurations are protected. For on-line vaults, the keys may be stored on the server (gateway server  606 ), and for off-line vaults, a local copy of the keys may be protected by a user password or biometric validation. If or when data is stored locally on the mobile device  602  in the secure container  616 , it may be preferred that a minimum of AES  256  encryption algorithm be utilized. 
     Other secure container features may also be implemented. For example, a logging feature may be included, wherein security events happening inside a managed application  610  may be logged and reported to the backend. Data wiping may be supported, such as if or when the managed application  610  detects tampering, associated encryption keys may be written over with random data, leaving no hint on the file system that user data was destroyed. Screenshot protection may be another feature, where an application may prevent any data from being stored in screenshots. For example, the key window&#39;s hidden property may be set to YES. This may cause whatever content is currently displayed on the screen to be hidden, resulting in a blank screenshot where any content would normally reside. 
     Local data transfer may be prevented, such as by preventing any data from being locally transferred outside the application container, e.g., by copying it or sending it to an external application. A keyboard cache feature may operate to disable the autocorrect functionality for sensitive text fields. SSL certificate validation may be operable so the application specifically validates the server SSL certificate instead of it being stored in the keychain. An encryption key generation feature may be used such that the key used to encrypt data on the mobile device  602  is generated using a passphrase or biometric data supplied by the user (if offline access is required). It may be XORed with another key randomly generated and stored on the server side if offline access is not required. Key Derivation functions may operate such that keys generated from the user password use KDFs (key derivation functions, notably Password-Based Key Derivation Function 2 (PBKDF2)) rather than creating a cryptographic hash of it. The latter makes a key susceptible to brute force or dictionary attacks. 
     Further, one or more initialization vectors may be used in encryption methods. An initialization vector will cause multiple copies of the same encrypted data to yield different cipher text output, preventing both replay and cryptanalytic attacks. This will also prevent an attacker from decrypting any data even with a stolen encryption key. Further, authentication then decryption may be used, wherein application data is decrypted only after the user has authenticated within the application. Another feature may relate to sensitive data in memory, which may be kept in memory (and not in disk) only when it&#39;s needed. For example, login credentials may be wiped from memory after login, and encryption keys and other data inside objective-C instance variables are not stored, as they may be easily referenced. Instead, memory may be manually allocated for these. 
     An inactivity timeout may be implemented, wherein after a policy-defined period of inactivity, a user session is terminated. 
     Data leakage from the application management framework  614  may be prevented in other ways. For example, if or when a managed application  610  is put in the background, the memory may be cleared after a predetermined (configurable) time period. When backgrounded, a snapshot may be taken of the last displayed screen of the application to fasten the foregrounding process. The screenshot may contain confidential data and hence should be cleared. 
     Another security feature may relate to the use of an OTP (one time password)  620  without the use of an AD (active directory)  622  password for access to one or more applications. In some cases, some users do not know (or are not permitted to know) their AD password, so these users may authenticate using an OTP  620  such as by using a hardware OTP system like SecurID (OTPs may be provided by different vendors also, such as Entrust or Gemalto). In some cases, after a user authenticates with a user ID, a text may be sent to the user with an OTP  620 . In some cases, this may be implemented only for online use, with a prompt being a single field. 
     An offline password may be implemented for offline authentication for those managed applications  610  for which offline use is permitted via enterprise policy. For example, an enterprise may want StoreFront to be accessed in this manner In this case, the client agent  604  may require the user to set a custom offline password and the AD password is not used. Gateway server  606  may provide policies to control and enforce password standards with respect to the minimum length, character class composition, and age of passwords, such as described by the standard Windows Server password complexity requirements, although these requirements may be modified. 
     Another feature may relate to the enablement of a client side certificate for certain applications  610  as secondary credentials (for the purpose of accessing PKI protected web resources via the application management framework micro VPN feature). For example, a managed application  610  may utilize such a certificate. In this case, certificate-based authentication using ActiveSync protocol may be supported, wherein a certificate from the client agent  604  may be retrieved by gateway server  606  and used in a keychain. Each managed application  610  may have one associated client certificate, identified by a label that is defined in gateway server  606 . 
     Gateway server  606  may interact with an enterprise special purpose web service to support the issuance of client certificates to allow relevant managed applications to authenticate to internal PKI protected resources. 
     The client agent  604  and the application management framework  614  may be enhanced to support obtaining and using client certificates for authentication to internal PKI protected network resources. More than one certificate may be supported, such as to match various levels of security and/or separation requirements. The certificates may be used by the Mail and Browser managed applications  610 , and ultimately by arbitrary wrapped applications  610  (provided those applications use web service style communication patterns where it is reasonable for the application management framework to mediate HTTPS requests). 
     Application management client certificate support on iOS may rely on importing a public-key cryptography standards (PKCS) 12 BLOB (Binary Large Object) into the iOS keychain in each managed application  610  for each period of use. Application management framework client certificate support may use a HTTPS implementation with private in-memory key storage. The client certificate may not be present in the iOS keychain and may not be persisted except potentially in “online-only” data value that is strongly protected. 
     Mutual SSL or TLS may also be implemented to provide additional security by requiring that a mobile device  602  is authenticated to the enterprise, and vice versa. Virtual smart cards for authentication to gateway server  606  may also be implemented. 
     Another feature may relate to application container locking and wiping, which may automatically occur upon jail-break or rooting detections, and occur as a pushed command from administration console, and may include a remote wipe functionality even when a managed application  610  is not running 
     A multi-site architecture or configuration of enterprise application store and an application controller may be supported that allows users to be serviced from one of several different locations in case of failure. 
     In some cases, managed applications  610  may be allowed to access a certificate and private key via an API (for example, OpenSSL). Trusted managed applications  610  of an enterprise may be allowed to perform specific Public Key operations with an application&#39;s client certificate and private key. Various use cases may be identified and treated accordingly, such as if or when an application behaves like a browser and no certificate access is required, if or when an application reads a certificate for “who am I,” if or when an application uses the certificate to build a secure session token, and if or when an application uses private keys for digital signing of important data (e.g. transaction log) or for temporary data encryption. 
     Converting Devices As Input Sources 
       FIG.  7    shows an example of a remote-access environment. Computing device  710  may be used as a server in a single-server or multi-server desktop virtualization system (e.g., a remote access or cloud system) and can be configured to provide virtual machines for client access devices. The network connections depicted in  FIG.  7    include a wide area network (WAN)  729 , but may also include other networks (e.g., a LAN). When used in a WAN networking environment, computing device  710  may include a modem or other wide area network interface for establishing communications over the WAN  729 , such as computer network  730  (e.g., the Internet). 
     Computing device  710  may operate in a networked environment supporting connections to one or more remote computers, such as terminals  741 - 745  (also referred to as client devices and/or client machines). The terminals  741 - 745  may be personal computers, mobile terminals (e.g., mobile phones, smartphones, personal digital assistants, notebooks, laptop computers, tablets, monitors, or servers, etc.). The terminals  741 - 745  may be also interconnected with each other wirelessly (e.g., Bluetooth or a network connection) or via wired lines. Each terminal may be uniquely identifiable by a universally unique identifier (UUID) and registered under a same user. 
     For example, computing device  710  may receive a request from client device  741  (e.g., iPhone) to establish a session, (e.g., establishing a virtual desktop and/or executing virtual applications). After the session is launched, the session display may be automatically casted to the biggest screen, for example, client device  742 . Alternatively, the session display may be casted to a default screen set (e.g., client device  743 ) by a user. Then, client device  741  may be virtualized as an input source, for example, as a keyboard, a touch board, or a mouse, etc. Further, client devices  743 - 745  may be virtualized as one or more input source(s). 
     Computing device  710  may execute various types of operating system platforms (e.g., WINDOWS, APPLE MAC OS, UNIX, LINUX, iOS, ANDROID, etc.) and/or execute various types of virtual applications (e.g., painter apps, calculator apps, gaming apps, etc.) after receiving the request from client device  741 . Computing device  710  may detect other client devices coupled with client device  741 , for example, client devices  743 - 745 . Computing device  710  may uniquely identify client devices  743 - 745 , for example, by their UUIDs, and determine that client devices  743 - 745  are registered under the same user. Computing device  710  may also determine that client devices  742  and  743  are display monitors and choose one of client devices  742  and  743  for casting the session display. Computing device  710  may choose client device having the biggest screen, for example, client device  742 . Alternatively, computing device  710  may choose a default screen set (e.g., client device  743 ) by the user for casting the session display. 
     Further, computing device  710  may select one or more of client devices  741 - 745  and convert/configure/set-up the selected client devices as input source(s), for example, a keyboard, a touch board, or a mouse, a numeric keypad, etc. Computing device  710  may select the one or more of client devices based on a type of the session. The type of the session may be determined, for example, based on, a particular operating system platform (e.g., WINDOWS, APPLE MAC OS, UNIX, LINUX, iOS, ANDROID, etc.) virtualized for the session, or types of virtual applications (e.g., painter apps, calculator apps, gaming apps, etc.) executed for the session. 
       FIG.  8    shows examples of selecting and configuring client devices as input sources. For example, computing device  710  may determine that the type of the session is WINDOWS virtual desktop access (VDA) and select client device  745  (e.g., iPad) based on the type of the session. Further, computing device  710  may execute a virtual application to configure/convert/set-up the client device  745  as input sources compatible for WINDOWS VDA, for example, a keyboard on the top of the client device  745 &#39;s screen and a touch board on the bottom/center of the client device  745 &#39;s screen, as shown in  FIG.  8   . 
     Computing device  710  may determine that the type of the session is, for example, Mac VDA and select client device  744  (e.g., iPad) and client device  741  (e.g., iPhone) based on the type of the session. Further, computing device  710  may execute virtual applications to configure/convert/set-up the client devices  744  and  741  as input sources compatible for Mac VDA, for example, a keyboard on the client device  744 &#39;s screen and a mouse on the client device  741 &#39;s screen, as shown in  FIG.  8   . 
     Computing device  710  may determine that the type of the session is, for example, a calculator application and select client device  741  (e.g., iPhone) based on the type of the session. Further, computing device  710  may cause (e.g., execute a virtual application) the client device  741  to configure/convert/set-up as, for example, a numeric keyboard/keypad. 
     Computing device  710  may automatically determine the type of the session, select, and configure/convert/set-up one or more client devices as input source(s), as described herein. Alternatively, an end user may override and decide which client devices should be selected and configured/converted/set-up, for example, by selecting one of the pre-arranged options from a menu  810 . For example, client device  741  is selected and configured/converted/set-up as a numeric keyboard in a case that the end user selects “Digital Keyboard Layout” in the menu  810 , regardless of the type of the session. Client device  745  is selected and configured/converted/set-up as a keyboard and a touch board in a case that the end user selects “Windows Keyboard Layout” in the menu  810 , regardless of the type of the session. Client devices  744  and  741  are selected and configured/converted/set-up respectively as a keyboard and a mouse in a case that the end user selects “Mac Keyboard Layout” in the menu  810 , regardless of the type of the session. Client device  741  is selected and configured/converted/set-up respectively as a touch board in a case that the end user selects “Touch board Layout” in the menu  810 , regardless of the type of the session. 
       FIG.  9    shows an example of client devices configured as input sources. For example, client device  744  (e.g., iPad) having a higher screen resolution (e.g., 1024×768) is selected for a keyboard and client device  741  (e.g., iPhone) having a lower screen resolution (e.g., 375×764) is selected for a touch board. Computing device  710  may execute a virtual application to simulate, for example, a keyboard on client device  744  screen. Computing device  710  may execute another virtual application to simulate, for example, a touch board on client device  741  screen. 
     When a user types the keyboard, computing device  710  may cause client device  744  to send the typed information to the launched session. When the user moves finger on the touch board, computing device  710  may cause client device  741  to send data to client device  744 , for example, by Bluetooth or a network connection, and client device  744  may send information to the launched session. 
     Computing device  710  may determine one or both of client devices  741  and  744  as one or more input source(s) (e.g., a keyboard, a touch board, a mouse, a numeric keypad, etc.), for example, based on the type of session (e.g., WINDOWS VDA, Mac VDA, virtual apps such as painter apps, calculator apps, gaming apps, etc.,) and further based on one or more features of the client devices  741  and  744 . The one or more features may include a device type (e.g., iPad, iPhone, Android Pad, Android Phone, etc.), a screen size, a screen resolution, touchpoints (e.g., how many simultaneous touches a screen can detect), a touch resolution (e.g., resolution of a touch sensor for touch accuracy), and/or a latency touch response (e.g., a time gap between a tap on a screen and a visible reaction to the tap on the screen). 
     Computing device  710  may configure/set-up/convert the one or both of client devices  741  and  744  as one or more input source(s), for example, by executing one or more virtual applications on the one or both of client devices  741  and  744 . Computing device  710  may configure/set-up/convert the one or both of client devices  741  and  744  as the one or more input source(s), for example, based on location of client devices  741  and  744  and/or a user preference. For example, Computing device  710  may configure/set-up/convert client device  744  as a keyboard with keyboard layouts of a language (e.g., Chinese) specific to the location (e.g., Beijing) of client device  744 . Computing device  710  may configure/set-up/convert client device  744  as a keyboard with keyboard layouts of a language (e.g., English) set by the user preference, for example, regardless of the location. Computing device  710  may configure/set-up/convert client device  744  as a keyboard, for example, with a physical keyboard layout (e.g., Bloomberg Keyboard, Ergonomic Keyboard, Gaming Keyboard, Laptop Keyboard, or Multimedia/Internet Keyboard, etc.) set by the user preference. Computing device  710  may configure/set-up/convert client device  744  as a keyboard with keyboard layouts of a language (e.g., French) specific to the location (e.g., Paris) of client device  744  and further with a physical keyboard layout (e.g., Bloomberg Keyboard) set by the user preference. 
     Computing device  710  may select a client device based on the latency touch response of the client device, for example, when the type of session is a virtual gaming application that demands a real-time touch response. Computing device  710  may select a client device based on combined weights of one or more features of the client devices. Computing device  710  may score each client device based on its features and select a client device with the highest score. For example, a score of a client device may be determined as a sum X of weighted feature scores, X=(a screen size score×W 1 )+(a screen resolution score×W 2 )+(a touch resolution score×W 3 )+(a latency touch response score×W 4 ), where each feature score ranges between 1-10, 10 being the highest score. For example, for the virtual gaming application, the most weight may be given to the latency touch response score, e.g., W 1 =15%, W 2 =20%, W 3 =25%, and W 4 =40%. 
       FIG.  10    shows an example of message sequences between client devices and computing device. For example, at step  1010 , client device  741  may send a session request message to the computing device  710 . At step  1011 , computing device  710  may authenticate/validate client device  741  as a primary client device and respond back to the primary client device  741  with session established message. At step  1020 , computing device  710  may query one or more client devices (e.g., client devices  742 - 745 ) coupled with the primary client device  741 . Computing device  710  may identify the queried client devices, for example, using their UUID, and determine that one or more of the queried devices are registered under a same user. At step  1030 , the computing device  710  may determine to cast session display, for example, to client device  742  having the biggest screen size, and may send cast session display message to the primary client device  741 . At step  1031 , the primary client device  741  may cast session display to client device  742  via, for example, Bluetooth, Airplay, screen mirroring, or a network connection, etc. 
     At step  1040 , computing device  710  may determine that the type of session, for example, is WINDOWS VDA. And computing device  710  may evaluate features of queried client devices and/or the primary client device to identify one or more client devices with features compatible with the type of session. For example, computing device  710  may select client device  744  (e.g., iPad) and the primary client device  741  (e.g., iPhone) as input sources, for example, based on the device type and/or screen resolutions. Then, computing device  710  may set up client device  744 , for example, as a keyboard. At step  1041 , computing device  710  may set up client device  741 , for example, as a touch board. 
     At step  1045 , client device  744  may receive an input data formed by key strokes on the keyboard. Client device  744  may forward the received input data to computing device  710 . At step  1046 , computing device  710  may send the input data to client device  744  for the session display. At step  1047 , client device  744  may forward the input data to client device  742  for the session display. At step  1048 , the primary client device  741  may detect an input data formed by finger moving on the touch board and forward the input data to computing device  710 . At step  1049 , computing device  710  may send the input data to the primary client device  741 . At step  1050 , client device  741  may forward the input data to client device  744 . At step  1051 , client device  744  may forward the input data to client device  742  for the session display. 
       FIG.  11    shows an example of a session process, which can be considered as an algorithm. At step  1110 , computing device  710  may detect a session launched by a primary device. At step  1120 , computing device  710  may detect/identify one or more devices associated with the session launched. At step  1130 , computing device  710  may select at least one device, among the one or more devices, for casting session display, for example, based on one or more features (e.g., a screen size, a screen resolution, etc.) of the one or more devices. At step  1140 , computing device  710  may select/configure one or more devices, among the one or more devices, as one or more input source(s) (e.g., a keyboard, a mouse, a touch board, a numeric keyboard, etc.). The step  1140  is further elaborated in  FIG.  12   . At step  1150 , computing device  710  may receive input data from the one or more input source(s) and forward the input data to the at least one device for casting session display. At step  1160 , computing device  710  may detect that the session is terminated/disconnected/logged-off. At step  1170 , computing device  710  may release the one or more input source(s) and the primary device. 
       FIG.  12    shows an example of an input source set-up process, which can be considered as an algorithm. For example, the input source set-up process is executed during the step  1140  of  FIG.  11   . At step  1210 , computing device  710  may detect/identify a type of the session (e.g., WINDOWS VDA, Mac VDA, virtual painter apps, virtual calculator apps, virtual gaming apps, etc.) launched by a primary device. At step  1220 , computing device  710  may query one or more devices associated with the primary device (e.g., connected via Bluetooth or a network connection). Computing device  710  may validate/authenticate/identify the one or more devices, for example, using their UUID, and detect that the one or more devices are registered under a same user as the primary device. 
     At step  1230 , computing device  710  may select one or more devices, among the one or more devices and the primary device, based on the type of the session and/or features of the one or more devices and the primary device. For example, the features may include a device type (e.g., iPad, iPhone, Android Pad, Android Phone, etc.), a screen size, a screen resolution, touchpoints, a touch resolution, and/or a latency touch response, etc. At step  1240 , computing device  710  may detect/identify a current location of the selected one or more device(s) and/or the primary device. Computing device  710  may also detect a preference setting, for example, of the primary device. At step  1250 , computing device  710  may set up the one or more device(s) selected as input source(s) (e.g., a virtual keyboard, a virtual mouse, a virtual touch pad, a virtual numeric keyboard, a virtual calculator, a virtual drawing board, etc.), based on the features of the one or more device(s), the location, and/or the preference setting. 
     Using the features described herein, a user may make the most out of a limited number of the user&#39;s devices to improve the users&#39; remote work experience; the devices might be idling otherwise. Also, the features bring more security: inputs from the devices may be restricted and/or controlled by a system administrator using the devices&#39; UUIDs. The system administrator can track where the inputs are coming from. For example, a hacker logging into the user&#39;s account from another iPad, any input coming from the other iPad will not be permitted—the UUID of the other iPad would fail to match with one or more UUIDs of the user&#39;s one or more registered device(s). 
     The features can also synergize the user&#39;s devices, for example, by Bluetooth or network connection while avoiding input hardware incompatibility among the users&#39; devices. A number of standard keyboard templates can be defined for the user and can be matched with specific devices. The features can automatically adapt and generate compatible virtual input device layouts on the user&#39;s devices for various virtualization solutions. As a result, the features may reduce the need for different input hardware devices, and thus decrease the user&#39;s costs while improving the user&#39;s remote work experience. 
     The following paragraphs (M1) through (M10) describe examples of methods that may be implemented in accordance with the present disclosure. 
     (M1) A method comprising establishing, via a wireless network, a session between a primary client device and a server, the primary client device being associated with a plurality of secondary client devices, selecting one or more devices, among the primary client device and the plurality of secondary client devices, based on a type of the session, as one or more input sources for the session, and causing the selected one or more devices to execute one or more virtual applications for using the selected one or more devices to receive an input. 
     (M2) A method may be performed as described in paragraph (M1) wherein the selecting one or more devices comprises identifying the type of the session based on an operating system or an application associated with the session, detecting one or more features of the primary client device and the plurality of secondary client devices, and selecting the one or more devices based on the identified type of the session and the detected one or more features. 
     (M3) A method may be performed as described in paragraph (M2) wherein the one or more features include a device type, a screen size, a screen resolution, touchpoints, a touch resolution, and/or a latency touch response. 
     (M4) A method may be performed as described in any of paragraphs (M2) through (M3) wherein the selecting one or more devices comprises selecting a single device of the primary client device and the plurality of secondary client devices, the single device for providing one or more graphical user interfaces. 
     (M5) A method may be performed as described in any of paragraphs (M2) through (M3) wherein the selecting one or more devices comprises selecting a first device and a second device of the primary client device and the plurality of secondary client devices, the first device for providing a first graphical user interface and the second device for providing a second graphical user interface, the first device having a screen size bigger than a screen size of the second device. 
     (M6) A method may be performed as described in any of paragraphs (M1) through (M5) wherein the causing the selected one or more devices comprises converting screens of the selected one or more devices to a virtual keyboard, a virtual touch pad, a virtual calculator, and/or a virtual drawing board. 
     (M7) A method may be performed as described in any of paragraphs (M1) through (M6) wherein the causing the selected one or more devices comprises detecting a location of the primary client device, and detecting a preference setting of the primary client device. 
     (M8) A method may be performed as described in any of paragraphs (M1) through (M7) wherein the causing the selected one or more devices comprises converting, based on the location and/or the preference setting, screens of the selected one or more devices to a virtual keyboard, a virtual touch pad, a virtual calculator, and/or a virtual drawing board. 
     (M9) A method may be performed as described in any of paragraphs (M1) through (M8) further comprising detecting the plurality of secondary client devices via the established session, and selecting one of the primary client device and the plurality of secondary client devices for casting session display. 
     (M10) A method may be performed as described in any of paragraphs (M1) through (M9) wherein the selecting one of the primary client device and the plurality of secondary client devices comprises comparing screen sizes of the primary client device and the plurality of secondary client devices, and selecting the one having the biggest screen size for casting the session display. 
     The following paragraphs (S1) through (S5) describe examples of a system that may be implemented in accordance with the present disclosure. 
     (S1) A system comprising a processor, and a memory storing computer readable instructions that, when executed by the processor, cause the system to establish, via a wireless network, a session between a primary client device and a server, the primary client device being associated with a plurality of secondary client devices, select one or more devices, among the primary client device and the plurality of secondary client devices, based on a type of the session, as one or more input sources for the session, and cause the selected one or more devices to execute one or more virtual applications for using the selected one or more devices to receive an input. 
     (S2) A system may be performed as described in paragraph (S1) wherein the computer readable instructions, when executed by the processor, further cause the system to identify the type of the session based on an operating system or an application associated with the session, detect one or more features of the primary client device and the plurality of secondary client devices, and select the one or more devices based on the identified type of the session and the detected one or more features. 
     (S3) A system may be performed as described in paragraph (S2) wherein the one or more features include a device type, a screen size, a screen resolution, touchpoints, a touch resolution, and/or a latency touch response. 
     (S4) A system may be performed as described in any of paragraphs (S2) through (S3) wherein the computer readable instructions, when executed by the processor, further cause the system to select a single device of the primary client device and the plurality of secondary client devices, the single device for providing one or more graphical user interfaces. 
     (S5) A system may be performed as described in any of paragraphs (S2) through (S3) wherein the computer readable instructions, when executed by the processor, further cause the system to select a first device and a second device of the primary client device and the plurality of secondary client devices, the first device for providing a first graphical user interface and the second device for providing a second graphical user interface, the first device having a screen size bigger than a screen size of the second device. 
     The following paragraphs (CRM1) through (CRM5) describe examples of computer-readable medium that may be implemented in accordance with the present disclosure. 
     (CRM1) A non-transitory computer readable medium storing computer readable instructions thereon that, when executed by a computer, causes the computer to perform a method comprising establishing, via a wireless network, a session between a primary client device and a server, the primary client device being associated with a plurality of secondary client devices, selecting one or more devices, among the primary client device and the plurality of secondary client devices, based on a type of the session, as one or more input sources for the session, and causing the selected one or more devices to execute one or more virtual applications for using the selected one or more devices to receive an input. 
     (CRM2) A non-transitory computer readable medium of paragraph (CRM1) readable instructions thereon that, when executed by the computer, causes the computer to perform the method, wherein the selecting one or more devices comprises identifying the type of the session based on an operating system or an application associated with the session, detecting one or more features of the primary client device and the plurality of secondary client devices, and selecting the one or more devices based on the identified type of the session and the detected one or more features. 
     (CRM3) A non-transitory computer readable medium of paragraph (CRM2) readable instructions thereon that, when executed by the computer, causes the computer to perform the method, wherein the one or more features include a device type, a screen size, a screen resolution, touchpoints, a touch resolution, and/or a latency touch response. 
     (CRM4) A non-transitory computer readable medium of any of paragraphs (CRM2) through (CRM3) readable instructions thereon that, when executed by the computer, causes the computer to perform the method, wherein the selecting one or more devices comprises selecting a single device of the primary client device and the plurality of secondary client devices, the single device for providing one or more graphical user interfaces. 
     (CRM5) A non-transitory computer readable medium of any of paragraphs (CRM2) through (CRM3) readable instructions thereon that, when executed by the computer, causes the computer to perform the method, wherein the selecting one or more devices comprises selecting a first device and a second device of the primary client device and the plurality of secondary client devices, the first device for providing a first graphical user interface and the second device for providing a second graphical user interface, the first device having a screen size bigger than a screen size of the second device. 
     Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are described as example implementations of the following claims.