Abstract:
Haptic feedback for communication of relevant information is provided. Oftentimes when using content narration to read or author a document, it is desirable to notify the user of a presence of meta-information. Aspects of a haptic feedback system avoid adding data to an audio stream, and instead, use haptic feedback technology to communicate information about a presence and type of meta-information in relation to content being narrated. Device functionality can be improved by enabling communication of relevant information through non-auditory cues that are consumable by sight-impaired users. By employing haptic technologies as described herein, users are enabled to feel when certain meta-information is available, and are further enabled to interact with the meta-information to receive additional information associated with the meta-information.

Description:
BACKGROUND 
       [0001]    Computing devices are designed to communicate with their users. Historically, this communication has been provided by a visual and audible presentation of information, such as via a screen or a speaker. When a need arises to capture the attention of a computing device user, for example, to alert the user of information that is relevant to the user at a given time, typical methods to grab the user&#39;s attention include visual alerts, such as pop-up notifications displayed on a screen, or audible signals, such as beeps, bells, or spoken announcements played through the device&#39;s speaker. 
         [0002]    Computing device users are increasingly using text narration for a variety of tasks. For example, users with vision impairments may use assistive technology, such as a screen reader to narrate or echo textual content. As another example, mobile users may use text narration in situations where looking at a screen is not desirable, such as when driving a car or engaging in another activity. 
         [0003]    While visual or audible notifications are effective in many applications, there are many other applications where visual or audible notifications may be impractical or distracting to the user. Providing visual or audible notifications when it is impractical or distracting to the user degrades the user&#39;s experience with the device, and can result in a user experiencing reduced functionality of the device. For example, oftentimes, it is desirable to notify a content narration user of meta-information in a document, wherein meta-information includes information that is related to content that is being narrated, but that is not directly part of content (e.g., co-author presence, hyperlinks, footnotes, endnotes, cross-references, comments, formatting, tracked changes, spelling or grammatical errors, contextual information). However, visual notifications may be impractical or ineffective, such as with visually-impaired users. Further, adding audible content to audio output, such as by narrating meta-information or playing audible alerts, can be disruptive or overwhelming to the user. For example, the users may lose their trains of thought or may not be able to clearly hear the narrated content. 
       SUMMARY 
       [0004]    This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description section. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended as an aid in determining the scope of the claimed subject matter. 
         [0005]    Aspects are directed to an automated system, method, and computer storage device for improving usability of a content narration device by providing haptic feedback for communication of relevant information. For example, device functionality can be improved by enabling communication of relevant information through non-auditory cues that are consumable by sight-impaired users. By employing haptic technologies, users are enabled to feel when certain meta-information is available, and are further enabled to interact with the meta-information as desired, for example, to receive additional information associated with the meta-information. 
         [0006]    In some examples, haptic feedback is used for notifying a user of content narration of a presence of meta-information, wherein meta-information is related to the content being narrated but that is not directly part of the content being narrated. For example, haptic output is transmitted to alert the user of the presence of such meta-information as: co-author presence, hyperlinks, footnotes, endnotes, cross-references, comments, formatting, tracked changes, spelling or grammar errors, and contextual information. Further, characteristics of the haptic output are varied to provide unique haptic outputs for different types of meta-information. Accordingly, the user is enabled to not only be alerted of a presence of meta-information while consuming narrated content, but is also unobtrusively informed of a corresponding type of meta-information that is present. Having this additional information provided to the user in an unobtrusive manner can help the user in making a decision on whether to request additional information on a piece of meta-information. Accordingly, users are ultimately enabled to request and receive incrementally increasing amounts of additional information associated with narrated content for which meta-information is provided. 
         [0007]    Examples are implemented as a computer process, a computing system, or as an article of manufacture such as a device, computer program product, or computer readable medium. According to an aspect, the computer program product is a computer storage medium readable by a computer system and encoding a computer program of instructions for executing a computer process. 
         [0008]    The details of one or more aspects are set forth in the accompanying drawings and description below. Other features and advantages will be apparent from a reading of the following detailed description and a review of the associated drawings. It is to be understood that the following detailed description is explanatory only and is not restrictive of the claims. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0009]    The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate various aspects. In the drawings: 
           [0010]      FIG. 1  is a block diagram showing components of an example system for providing haptic feedback for communication of relevant information; 
           [0011]      FIG. 2  is an illustration of an example document including meta-information for which a haptic feedback system is operative to provide a corresponding haptic output; 
           [0012]      FIGS. 3A-3F  illustrate an example scenario of requesting and providing additional information associated with a meta-information item; 
           [0013]      FIG. 4  is a flow chart showing general stages involved in an example method for providing haptic feedback for communication of relevant information; 
           [0014]      FIG. 5  is a block diagram illustrating example physical components of a computing device; 
           [0015]      FIGS. 6A and 6B  are block diagrams of a mobile computing device; and 
           [0016]      FIG. 7  is a block diagram of a distributed computing system. 
       
    
    
     DETAILED DESCRIPTION 
       [0017]    The following detailed description refers to the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the following description refers to the same or similar elements. While examples may be described, modifications, adaptations, and other implementations are possible. For example, substitutions, additions, or modifications may be made to the elements illustrated in the drawings, and the methods described herein may be modified by substituting, reordering, or adding stages to the disclosed methods. Accordingly, the following detailed description is not limiting, but instead, the proper scope is defined by the appended claims. Examples may take the form of a hardware implementation, or an entirely software implementation, or an implementation combining software and hardware aspects. The following detailed description is, therefore, not to be taken in a limiting sense. 
         [0018]    Aspects of the present disclosure are directed to methods, systems, and computer storage media for improving usability of a text narration device by providing haptic feedback for communication of relevant information. Among other benefits, the disclosed technology enables users to continue with their workflow of consuming narrated content, while receiving non-auditory communication of relevant meta-information related to the narrated content. Further, the communication of relevant meta-information is provided as a distinctive haptic output that corresponds to a specific type of meta-information, therefore providing an unobtrusive communication of information about the meta-information. The user is enabled to request and receive additional information about the meta-information, and in some examples, is enabled to take action on the meta-information based on the additional information. 
         [0019]    With reference now to  FIG. 1 , a block diagram illustrating aspects of an example haptic feedback operating environment  100  is shown. The example haptic feedback operating environment  100  includes a computing device  104 . The computing device  104  may be one of various types of computing devices for executing applications  130   a,b  (collectively,  130 ) for performing a variety of tasks. Non-limiting examples of suitable computing devices  104  include desktop computers, laptop computers, tablet computers, laptop/tablet hybrid computing devices, large screen multi-touch displays, mobile phones, personal digital assistants, wearable devices, gaming devices, connected automobiles, and smart appliances. 
         [0020]    The haptic feedback operating environment  100  includes one or more applications  130  used to view, generate, and edit electronic documents  114 . Examples of suitable applications  130  include, but are not limited to, word processing, spreadsheet, database, slide presentation, electronic mail, drawing, note taking, web browser, media player, and game applications. In some examples, the application(s)  130  are web applications  130   a  run on a server  112  and provided via an online service  108 , wherein the online service  108  is illustrative of portal-based computing system for creating, managing and sharing electronic documents  114 . In some examples, the online service  108  is located on a server  112 , such as a shared resources server located at an enterprise accessible by various client computing devices  104   a,b  (collectively,  104 ). In other examples, the server  112  is a shared resources server remotely located from the various client computing devices  104 . According to an aspect, the online service  108  includes a document system  110  operative to provide document storage and/or editing of documents  114 . In some examples, the online service  108  enables co-authoring of documents  114 , for example, where a plurality of users/co-authors  102 , 132  are enabled to edit the same document  114  concurrently and remotely. In one example, the document system  110  provides one or more online applications  130   a  to view, generate, and edit electronic documents  114 . According to an aspect, the document system  110  comprises a local or remote storage repository  125  at which the one or more electronic documents  114  are stored. 
         [0021]    According to an aspect, web applications  130   a  communicate via the network  120  with a user agent  106 , such as a browser, executing on a client computing device  104 . The user agent  106  provides a user interface that allows a user  102  to interact with application content and electronic documents  114  stored in the storage repository  125 . The user interface is displayed on a display of the computing device  104  running the user agent  106 . In some examples, the user agent  106  is a dedicated client application that provides a user interface and access to electronic documents  114  stored in the storage repository  125 . In other examples, the application(s)  130  are local applications  130   b  stored and executed on the computing device  104 , and provide a user interface that allows a user  102  to interact with application content and electronic documents  114  stored locally on the device or in the storage repository  125 . 
         [0022]    A user  102  may use an application  130  to create a new document  114 , or to edit an existing document  114 . In examples, the application  130  receives input from the user  102 , such as text input, drawing input, etc., via various input methods, such as those relying on mice, keyboards, and remote controls, as well as Natural User Interface (NUI) methods, which enable a user to interact with a device in a “natural” manner, such as via speech recognition, touch and stylus recognition, gesture recognition both on screen and adjacent to the screen, air gestures, head and eye tracking, voice and speech, vision, touch, hover, gestures, and machine intelligence. The user input results in content  118  being added to the document  114 . In some examples, content  118  is added within a document canvas (e.g., a page in a word processing document, a spreadsheet in a spreadsheet document, a slide in a presentation document). 
         [0023]    In other examples, a user  102  may use an application  130  to consume content  118  rather than to author or modify content. Additional examples of suitable applications  130  in a haptic feedback operating environment  100  include a book reader application, a video or audio playback application, or a global positioning system (GPS) application, where the user views or listens to content  118  that is part of a document  114  or file (e.g., an electronic book (e-book)) or part of a core interface of a device (e.g., GPS unit). In some examples, the content  118  is textual content, such as document content. In other examples, the content  118  is video or audio content. In other examples, the content  118  is information generated by the application  130 , such as directions to a destination along a route. As used herein, the term “document”  114  is used in a broad sense, wherein a document includes a representation of various kinds of information (e.g., a word processing document, a spreadsheet document, a slide presentation document, a notes document, an e-book, an audio file, a video file, a navigation file). Documents  114  in the present disclosure include the examples described above. However, these examples are not limiting, and further examples of documents  114 , applications  130 , and content  118  are within the scope of the present disclosure. 
         [0024]    According to aspects, the haptic feedback operating environment  100  further includes a narration system  126  operative to output audio content associated with a document  114 , for example, to narrate or echo content  118 . In some examples, the narration system  126  is embodied as an assistive technology application, such as a screen reader, where the narration system narrates or echoes document content  118  as a cursor proceeds through the document  114 . 
         [0025]    In some examples, the narration system  126  is operative to convert previously written content  118  or content that is being transcribed into an audio output, such as speech (e.g., text-to-speech). In other examples, the narration system  126  is operative to output audio content  118  that is previously recorded, such as an audio book recorded by a voice actor, a podcast file, or other type of audio file, or a video recording. According to an aspect, previously recorded content may be augmented with haptic markers that operate as a signal to a haptic feedback system  128  of an item of interest associated with the haptic marker. Further, in some examples, the narration system  126  is operative to convert information that is generated by the application  130  (e.g., directions to a destination along a route) to audio content, and to output the audio content. 
         [0026]    According to an aspect, the haptic feedback operating environment  100  includes a haptic feedback system  128  that is communicatively attached to the application  130   b  or to the user agent  106  when the application is a web application  130   a.  For example, the haptic feedback system  128  is illustrative of a software module, system, or device that includes functionality for providing haptic feedback for communication of relevant information to a content narration user  102 . In one example, the computing device  104  includes a haptic feedback system application programming interface (API), operative to enable the application  130  to employ haptic feedback for communication of relevant meta-information via stored instructions. 
         [0027]    In examples, when the narration system  126  narrates or echoes content  118  as the cursor proceeds through the document  114 , the haptic feedback system  128  is operative to detect items of interest. According to an aspect, items of interest include meta-information  122  that is related to content  118  that is being narrated, but that is not directly part of the content  118 . For example, meta-information can include such information as: co-author presence, hyperlinks, footnotes, endnotes, cross-references, comments, formatting, tracked changes, spelling or grammatical errors, or contextual information (e.g., map for an address, location of additional content). These examples are not limiting, and further examples of meta-information are within the scope of the present disclosure. As can be appreciated, a detected item of interest is relevant to a current context of content  118  in the document  114  being narrated. 
         [0028]    In some examples, documents  114  include markup and content, for example, structured information that comprise content (e.g., text, pictures) and an indication of what role the content plays (e.g., element, entity reference, comment, processing instruction, marked section, or document type declaration). A markup language, such as Extensible Markup Language (XML) is a mechanism to identify structures in a document, wherein an XML specification defines a standard way to add markups to documents. According to an aspect, an item of interest (e.g., a meta-information item  122 ) includes an anchor in its XML structure indicating that it is something other than textual content. For example, the anchor indicates that a content element is one of: a hyperlink, a footnote, an endnote, a cross-reference, a comment, a formatting element, tracked changes content, a spelling or grammatical error, and contextual information (e.g., a map of an address, location of additional content). It should be understood that XML is but one example markup language and that others such as JavaScript Object Notation (JSON), s-expressions (sexprs), or other alternatives may be used. 
         [0029]    In a co-authoring example, a flag is inserted into a document  114  to indicate a presence of another user  132  in a particular area of the document  114 . For example, when another user  132  joins a document  114 , the other user  132  is added to an editors table, which updates automatically as users join and exit the document. According to an aspect, the flag is associated with the editors table, and provides an indication to the user  102  and to the haptic feedback system  128  as to the presence and position of a co-author in the document  114 . In other examples, the haptic feedback system  128  is enabled to be notified of events that occur outside the textual content  118 , but that are related to the textual content. For example, the haptic feedback system  128  may receive an event notification associated with an automatic save of the document  114 . In another example, the haptic feedback system  128  may receive an event notification of a co-authoring event. In some example, items of interest include haptic markers corresponding to meta-information items  122 . For example, the haptic marker may be added to a document  114  to indicate that a particular content element has meta-information items  122  associated with it. 
         [0030]    According to an aspect, the discovery of an item of interest operates as a signal to provide haptic feedback to the user  102  for communicating the presence of meta-information items  122  in association with content being narrated to the user  102 . In some examples, upon detecting an item of interest, the haptic feedback system  128  is operative to reference a haptic feedback library  124  for picking correct haptic feedback characteristics according to the type of meta-information item  122  identified. For example, various characteristics of haptic feedback notifications may exist, such as outputs that vary in pattern (e.g., two short pulses versus one short and one long pulse), intensity (e.g., light vibration versus a strong vibration), location (e.g., where on the device  104 , 134  the haptic output is felt, type (e.g., vibration versus a tap), and length (e.g., duration of a vibration or tap). One or more of these characteristics may be altered to ensure that a unique haptic output is communicated to the user  102  that is indicative of a particular type of meta-information item  122 . As used herein, the terms “haptic output” and “haptic feedback” are used interchangeably. 
         [0031]    In some examples, haptic output varies in location. For example, haptic output may be directed to a particular location of the computing device  104  or of a companion device  134 . According to an example, in a document  114  with a complex layout, such as one that comprises multiple blocks of text that may be laid out in a grid or other format, haptic feedback may be used to provide an indication of additional content or actions that are available in the document and the location of the content or actions that the user  102  can navigate to after reading a given block of text. With reference to  FIG. 2 , an example document  114  comprising multiple blocks of text  202   a,b,c,d  is shown displayed on a tablet computing device  104 . According to an example, the user  102  uses a narration system  126  to narrate the document  114 . When the narration system  126  narrates the first block of text  202   a,  a cursor proceeds through the content in first block of text  202   a  until an item of interest is detected by the haptic feedback system  128 , such as an end of the block of text. Accordingly, the haptic feedback system  128  is operative to trigger a haptic actuator  116  to generate haptic output  204  associated with the item of interest. In this example, the haptic feedback  204  is provided to alert the user  102  of a location of a next available block of text  202   b.  For example, the haptic feedback system  128  may direct the haptic actuator  116  to generate haptic output  204  in a location on the device  104  relative to a general direction of the additional content (e.g., next block of text  202   b ) to indicate to the user in which direction in the document  114  additional content is available to navigate. 
         [0032]    With reference again to  FIG. 1 , the haptic feedback system  128  is communicatively attached to a haptic actuator  116 . In some examples, the haptic actuator  116  is stored and executed locally on the computing device  104 . In other examples, the haptic actuator  116  is located in a companion device  134 , such as a smart watch, fitness band, mobile phone, or in a device dedicated to providing haptic feedback. According to an aspect, the haptic actuator  116  is illustrative of a vibration motor, such as an eccentric rotating mass vibration motor (ERM) or a linear resonant actuator (LRA), this is operative to generate a force (e.g., haptic output  204 ) in response to receiving a trigger. For example, the trigger may include information associated with haptic output characteristics for the haptic actuator  116  to generate, which may vary in pattern (e.g., two short pulses versus one short and one long pulse), intensity (e.g., light vibration versus a strong vibration), location (e.g., where on the device  104 , 134  the haptic output is felt, type (e.g., vibration versus a tap), and length (e.g., duration of a vibration or tap). By providing haptic feedback for alerting the user of  102  meta-information items  122 , additional data are not added to the audio stream, which can be distracting to the user  102 . Accordingly, the user  102  is enabled to be notified of meta-information item  122  without being distracted or without interfering with the user&#39;s consumption of narrated content, thus improving the user&#39;s experience with the device and with content narration. 
         [0033]    According to an aspect and as illustrated in  FIGS. 3A-3F , upon receipt of haptic feedback  204 , the user  102  is enabled to perform an action to request additional information associated with a last meta-information item  122  encountered. For example, when haptic feedback  204  associated with meta-information is provided, the user  102  may speak a command, select a button or displayed command, perform a gesture, etc., which is received by the haptic feedback system  128  as an indication of a request for additional information associated with the meta-information item  122 , wherein the haptic feedback system  128  is operative to narrate details about the meta-information. Further, for some types of meta-information, the user  102  may be enabled to select to take an action. 
         [0034]      FIGS. 3A-3F  illustrate an example scenario of requesting and providing additional information associated with a meta-information item  122 . With reference now to  FIG. 3A , a user  102  is using a narration system  126  to narrate an example document  114 . For example, the document  114  comprises textual content  118  and a meta-information item  122 .  FIG. 3A  shows the narration system  126  generating and providing audio output  302  of the document content  118 . 
         [0035]    With reference now to  FIG. 3B , when the narration system  126  arrives at a meta-information item  122  in the document  114 , the haptic feedback system  128  triggers the haptic actuator  116  to generate and output haptic feedback  204  associated with the meta-information item  122 . For example, the haptic actuator  116  generates a specific haptic output  204 , such as two light vibrations, to indicate the presence of a hyperlink (meta-information item  122 ) as the text (content  118 ) of the link is narrated by the narration system  126 . By providing a specific haptic output  204 , for example, an output specific to a hyperlink, the haptic feedback system  128  is enabled to unobtrusively communicate more information than simply an alert to the presence of a meta-information item  122 . Instead, the haptic feedback system  128  is enabled to provide enriched information, such as a type of meta-information item  122  that is included in the document  114 , which may be used by the user  102  in making a decision on whether to request additional information on each piece of meta-information. 
         [0036]    With reference now to  FIG. 3C , the user  102  performs an action (e.g., provides a request  304 ) for additional information about the hyperlink (meta-information  122 ). In one example and as illustrated in  FIG. 3C , the user  102  may speak aloud the request  304   a,  “what is the link?” In another example (not illustrated), the user may press one or more buttons or keyboard shortcuts to pause narration (audio output  302 ), and request additional information associated with the meta-information  122 . 
         [0037]    With reference now to  FIG. 3D , responsive to the request  304   a,  the narration system  126  provides audio output  302  of a first level of incremental additional information  306   a  associated with the meta-information  122 . According to an aspect, the application  130  is operative to provide a summary or provide a condensed version of additional information  306  associated with a meta-information item  122 . In the illustrated example, the narration system  126  provides audio output  302  of the uniform resource locator (URL) that the hyperlink points to and/or a preview snippet of meta description data (e.g., title, description) that represents and describes the website. For example, meta descriptions are commonly used on search engine result pages to display preview snippets for a given page. According to an aspect, the first level of additional information  306   a  may include more or less information. 
         [0038]    The user  102  may then choose a subsequent action, such as to continue listening to the textual content  118  narration (audio output  302 ), or to provide a second request  304   b  for a next incremental level of additional information  306   b.  As illustrated in  FIG. 3E , the user  102  provides a second request  304   b  for the next incremental level of additional information  306   b.  In the illustrated example, the second request  304   b  for the next incremental level of additional information  306   b  is a request to “follow the link.” 
         [0039]    With reference now to  FIG. 3F , responsive to the second request  304   b,  the hyperlink (e.g., meta-information item  122 ) is activated, and an appropriate application  130  generates a request to follow the hyperlink to the linked web page, providing the user  102  with the next incremental level of additional information  306   b.  As can be appreciated, other types of meta-information items  122  may have different possible actions. For example, meta-information embodied as a spelling error may provide an action to correct the error with one or more suggested replacements. As another example, meta-information embodied as a footnote identifier may provide an action to read a referenced note. According to aspects, by providing haptic feedback  204  for meta-information items  122 , the user  102  is enabled to be incrementally informed of additional available information an unobtrusive manner, and is further enabled to take action on the additional available information. 
         [0040]    Having described an operating environment  100  and various aspects of the haptic feedback system  128  with respect to  FIGS. 1-3F ,  FIG. 4  is a flow chart showing general stages involved in an example method  400  for providing haptic feedback for communication of relevant information. With reference now to  FIG. 4 , the method  400  begins at start OPERATION  402 , and proceeds to OPERATION  404 , where a user  102  selectively opens a document  114  in an application  130 . According to examples, the document  114  comprises content  118 , such as textual content, audio content, video content, etc., and one or more pieces of meta-information  122  associated with a piece of content  118 . 
         [0041]    The method  400  proceeds from OPERATION  404  to OPERATION  406 , where a narration system  126  is triggered to access and narrate the content  118 . For example, the narration system  126  is in communication with the application  130 . As the narration system  126  progresses through the content  118  in the document  114 , it generates audio output  302  (e.g., text-to-speech) of the content at a current cursor location or narration point. 
         [0042]    The method  400  continues to DECISION OPERATION  408 , where a determination is made as to whether an item of interest is detected at a current narration point. In one example, as the narration system  126  progresses through and narrates the content  118 , the haptic feedback system  128  analyzes each content item for determining whether the item includes an anchor in its structure indicating that it is something other than textual content  118 , such as a particular type of meta-information including one of: a hyperlink, a footnote, an endnote, a cross-reference, a comment, a formatting element, tracked changes content, a spelling or grammatical error, and contextual information (e.g., a map of an address, location of additional content). In another example, meta-information  122  is stored independently of the document content  118  (e.g., a table of locations of co-authors that reference locations in the document content). Accordingly, according to this example, the haptic feedback system  128  analyzes the table for identifying an item of interest. 
         [0043]    When a determination is made that a content item is not an item of interest (e.g., a meta-information item  122 ), the method  400  returns to OPERATION  406 , where the narration system  126  continues to narrate the content  118 , and the haptic feedback system  128  continues to analyze each content item for determining whether it is an item of interest. When a determination is made that a content item is an item of interest (e.g., a meta-information item  122 ), the method  400  proceeds to OPERATION  410 , where the haptic feedback system  128  makes a determination to alert the user  102  about the meta-information via haptic feedback  204 , and makes a determination as to what haptic feedback characteristics to apply to the haptic output. For example, the haptic feedback system  128  maps the identified type of meta-information item  122  to a haptic library  124  comprising an index of haptic feedback characteristics according to a particular type of meta-information item  122  for selecting a unique combination of haptic feedback characteristics to apply to the haptic output  204 . 
         [0044]    The method  400  continues to OPERATION  412 , where the haptic feedback system  128  triggers the haptic actuator  116 , which at OPERATION  414 , provides the haptic output  204  according to the haptic feedback characteristics determined at OPERATION  410 . According to an example, the haptic output  204  is provided substantially concurrently with the audio output  302  of the content item  118  to which the meta-information item  122  is associated is being narrated by the narration system  126 . 
         [0045]    The method  400  proceeds to DECISION OPERATION  416 , where a determination is made as to whether an indication of a selection for additional information  306  associated with the meta-information item  122  is received. When a determination is made that a selection for additional content is not received, the method  400  proceeds to DECISION OPERATION  420 , where the narration system  126  continues to narrate the document  114  by returning to OPERATION  406  or concludes at OPERATION  498  depending on the presence of additional content to narrate. When a determination is made that an indication of a selection for additional content is received, such as when the user  102  speaks or selects a command to act on the meta-information item  122 , the method  400  proceeds to OPERATION  418 , where the narration system  126  is triggered to narrate additional information  306  associated with the meta-information item  122 . For example, the narration system  126  may read a referenced footnote, read a preview snippet of meta description data (e.g., title, description) that represents and describes a website to which a hyperlink points, provide information notifying the user  102  that a word is misspelled and suggested replacements from which the user  102  is enabled to select to correct the spelling error, or provide information notifying the user  102  of a grammatical error and suggested corrections from which the user  102  is enabled to select to correct the grammatical error. Other examples are within the scope of the present disclosure. 
         [0046]    The method  400  returns to DECISION OPERATION  416  for determining whether a selection for additional information is received. When a determination is made that a request for additional information  206  associated with the meta-information  122  is received, the method  400  continues to OPERATION  418 , where a next incremental level of additional information  206  is provided to the user  102 . When a determination is made that a selection for additional information is not received, the method  400  continues to DECISION OPERATION  420 , where a determination is made as to whether there is additional content  118  in the document  114  to analyze for identifying meta-information  122 . When a determination is made that there is additional content  118  in the document  114  to analyze for identifying meta-information  122 , the method  400  returns to OPERATION  406 . When a determination is made that there is not additional content  118  to analyze for identifying meta-information  122 , the method  400  ends at OPERATION  498 . 
         [0047]    While implementations have been described in the general context of program modules that execute in conjunction with an application program that runs on an operating system on a computer, those skilled in the art will recognize that aspects may also be implemented in combination with other program modules. Generally, program modules include routines, programs, components, data structures, and other types of structures that perform particular tasks or implement particular abstract data types. 
         [0048]    The aspects and functionalities described herein may operate via a multitude of computing systems including, without limitation, desktop computer systems, wired and wireless computing systems, mobile computing systems (e.g., mobile telephones, netbooks, tablet or slate type computers, notebook computers, and laptop computers), hand-held devices, multiprocessor systems, microprocessor-based or programmable consumer electronics, minicomputers, and mainframe computers. 
         [0049]    In addition, according to an aspect, the aspects and functionalities described herein operate over distributed systems (e.g., cloud-based computing systems), where application functionality, memory, data storage and retrieval and various processing functions are operated remotely from each other over a distributed computing network, such as the Internet or an intranet. According to an aspect, user interfaces and information of various types are displayed via on-board computing device displays or via remote display units associated with one or more computing devices. For example, user interfaces and information of various types are displayed and interacted with on a wall surface onto which user interfaces and information of various types are projected. Interaction with the multitude of computing systems with which implementations are practiced include, keystroke entry, touch screen entry, voice or other audio entry, gesture entry where an associated computing device is equipped with detection (e.g., camera) functionality for capturing and interpreting user gestures for controlling the functionality of the computing device, and the like. 
         [0050]      FIGS. 5-7  and the associated descriptions provide a discussion of a variety of operating environments in which examples are practiced. However, the devices and systems illustrated and discussed with respect to  FIGS. 5-7  are for purposes of example and illustration and are not limiting of a vast number of computing device configurations that are used for practicing aspects, described herein. 
         [0051]      FIG. 5  is a block diagram illustrating physical components (i.e., hardware) of a computing device  500  with which examples of the present disclosure are be practiced. In a basic configuration, the computing device  500  includes at least one processing unit  502  and a system memory  504 . According to an aspect, depending on the configuration and type of computing device, the system memory  504  comprises, but is not limited to, volatile storage (e.g., random access memory), non-volatile storage (e.g., read-only memory), flash memory, or any combination of such memories. According to an aspect, the system memory  504  includes an operating system  505  and one or more program modules  506  suitable for running software applications  550 . According to an aspect, the system memory  504  includes the haptic feedback system  128 . The operating system  505 , for example, is suitable for controlling the operation of the computing device  500 . Furthermore, aspects are practiced in conjunction with a graphics library, other operating systems, or any other application program, and is not limited to any particular application or system. This basic configuration is illustrated in  FIG. 5  by those components within a dashed line  508 . According to an aspect, the computing device  500  has additional features or functionality. For example, according to an aspect, the computing device  500  includes additional data storage devices (removable and/or non-removable) such as, for example, magnetic disks, optical disks, or tape. Such additional storage is illustrated in  FIG. 5  by a removable storage device  509  and a non-removable storage device  510 . 
         [0052]    As stated above, according to an aspect, a number of program modules and data files are stored in the system memory  504 . While executing on the processing unit  502 , the program modules  506  (e.g., haptic feedback system  128 ) perform processes including, but not limited to, one or more of the stages of the method  400  illustrated in  FIG. 4 . According to an aspect, other program modules are used in accordance with examples and include applications such as electronic mail and contacts applications, word processing applications, spreadsheet applications, database applications, slide presentation applications, drawing or computer-aided application programs, etc. 
         [0053]    According to an aspect, aspects are practiced in an electrical circuit comprising discrete electronic elements, packaged or integrated electronic chips containing logic gates, a circuit using a microprocessor, or on a single chip containing electronic elements or microprocessors. For example, aspects are practiced via a system-on-a-chip (SOC) where each or many of the components illustrated in  FIG. 5  are integrated onto a single integrated circuit. According to an aspect, such an SOC device includes one or more processing units, graphics units, communications units, system virtualization units and various application functionality all of which are integrated (or “burned”) onto the chip substrate as a single integrated circuit. When operating via an SOC, the functionality, described herein, is operated via application-specific logic integrated with other components of the computing device  500  on the single integrated circuit (chip). According to an aspect, aspects of the present disclosure are practiced using other technologies capable of performing logical operations such as, for example, AND, OR, and NOT, including but not limited to mechanical, optical, fluidic, and quantum technologies. In addition, aspects are practiced within a general purpose computer or in any other circuits or systems. 
         [0054]    According to an aspect, the computing device  500  has one or more input device(s)  512  such as a keyboard, a mouse, a pen, a sound input device, a touch input device, etc. The output device(s)  514  such as a display, speakers, a printer, etc. are also included according to an aspect. The aforementioned devices are examples and others may be used. According to an aspect, the computing device  500  includes one or more communication connections  516  allowing communications with other computing devices  518 . Examples of suitable communication connections  516  include, but are not limited to, radio frequency (RF) transmitter, receiver, and/or transceiver circuitry; universal serial bus (USB), parallel, and/or serial ports. 
         [0055]    The term computer readable media as used herein include computer storage media. Computer storage media include volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information, such as computer readable instructions, data structures, or program modules. The system memory  504 , the removable storage device  509 , and the non-removable storage device  510  are all computer storage media examples (i.e., memory storage.) According to an aspect, computer storage media includes RAM, ROM, electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, CD-ROM, digital versatile disks (DVD) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other article of manufacture which can be used to store information and which can be accessed by the computing device  500 . According to an aspect, any such computer storage media is part of the computing device  500 . Computer storage media does not include a carrier wave or other propagated data signal. 
         [0056]    According to an aspect, communication media is embodied by computer readable instructions, data structures, program modules, or other data in a modulated data signal, such as a carrier wave or other transport mechanism, and includes any information delivery media. According to an aspect, the term “modulated data signal” describes a signal that has one or more characteristics set or changed in such a manner as to encode information in the signal. By way of example, and not limitation, communication media includes wired media such as a wired network or direct-wired connection, and wireless media such as acoustic, radio frequency (RF), infrared, and other wireless media. 
         [0057]      FIGS. 6A and 6B  illustrate a mobile computing device  600 , for example, a mobile telephone, a smart phone, a tablet personal computer, a laptop computer, and the like, with which aspects may be practiced. With reference to  FIG. 6A , an example of a mobile computing device  600  for implementing the aspects is illustrated. In a basic configuration, the mobile computing device  600  is a handheld computer having both input elements and output elements. The mobile computing device  600  typically includes a display  605  and one or more input buttons  610  that allow the user to enter information into the mobile computing device  600 . According to an aspect, the display  605  of the mobile computing device  600  functions as an input device (e.g., a touch screen display). If included, an optional side input element  615  allows further user input. According to an aspect, the side input element  615  is a rotary switch, a button, or any other type of manual input element. In alternative examples, mobile computing device  600  incorporates more or less input elements. For example, the display  605  may not be a touch screen in some examples. In alternative examples, the mobile computing device  600  is a portable phone system, such as a cellular phone. According to an aspect, the mobile computing device  600  includes an optional keypad  635 . According to an aspect, the optional keypad  635  is a physical keypad. According to another aspect, the optional keypad  635  is a “soft” keypad generated on the touch screen display. In various aspects, the output elements include the display  605  for showing a graphical user interface (GUI), a visual indicator  620  (e.g., a light emitting diode), and/or an audio transducer  625  (e.g., a speaker). In some examples, the mobile computing device  600  incorporates a vibration transducer for providing the user with tactile feedback. In yet another example, the mobile computing device  600  incorporates input and/or output ports, such as an audio input (e.g., a microphone jack), an audio output (e.g., a headphone jack), and a video output (e.g., a HDMI port) for sending signals to or receiving signals from an external device. In yet another example, the mobile computing device  600  incorporates peripheral device port  640 , such as an audio input (e.g., a microphone jack), an audio output (e.g., a headphone jack), and a video output (e.g., a HDMI port) for sending signals to or receiving signals from an external device. 
         [0058]      FIG. 6B  is a block diagram illustrating the architecture of one example of a mobile computing device. That is, the mobile computing device  600  incorporates a system (i.e., an architecture)  602  to implement some examples. In one example, the system  602  is implemented as a “smart phone” capable of running one or more applications (e.g., browser, e-mail, calendaring, contact managers, messaging clients, games, and media clients/players). In some examples, the system  602  is integrated as a computing device, such as an integrated personal digital assistant (PDA) and wireless phone. 
         [0059]    According to an aspect, one or more application programs  650  are loaded into the memory  662  and run on or in association with the operating system  664 . Examples of the application programs include phone dialer programs, e-mail programs, personal information management (PIM) programs, word processing programs, spreadsheet programs, Internet browser programs, messaging programs, and so forth. According to an aspect, the haptic feedback system  128  is loaded into memory  662 . The system  602  also includes a non-volatile storage area  668  within the memory  662 . The non-volatile storage area  668  is used to store persistent information that should not be lost if the system  602  is powered down. The application programs  650  may use and store information in the non-volatile storage area  668 , such as e-mail or other messages used by an e-mail application, and the like. A synchronization application (not shown) also resides on the system  602  and is programmed to interact with a corresponding synchronization application resident on a host computer to keep the information stored in the non-volatile storage area  668  synchronized with corresponding information stored at the host computer. As should be appreciated, other applications may be loaded into the memory  662  and run on the mobile computing device  600 . 
         [0060]    According to an aspect, the system  602  has a power supply  670 , which is implemented as one or more batteries. According to an aspect, the power supply  670  further includes an external power source, such as an AC adapter or a powered docking cradle that supplements or recharges the batteries. 
         [0061]    According to an aspect, the system  602  includes a radio  672  that performs the function of transmitting and receiving radio frequency communications. The radio  672  facilitates wireless connectivity between the system  602  and the “outside world,” via a communications carrier or service provider. Transmissions to and from the radio  672  are conducted under control of the operating system  664 . In other words, communications received by the radio  672  may be disseminated to the application programs  650  via the operating system  664 , and vice versa. 
         [0062]    According to an aspect, the visual indicator  620  is used to provide visual notifications and/or an audio interface  674  is used for producing audible notifications via the audio transducer  625 . In the illustrated example, the visual indicator  620  is a light emitting diode (LED) and the audio transducer  625  is a speaker. These devices may be directly coupled to the power supply  670  so that when activated, they remain on for a duration dictated by the notification mechanism even though the processor  660  and other components might shut down for conserving battery power. The LED may be programmed to remain on indefinitely until the user takes action to indicate the powered-on status of the device. The audio interface  674  is used to provide audible signals to and receive audible signals from the user. For example, in addition to being coupled to the audio transducer  625 , the audio interface  674  may also be coupled to a microphone to receive audible input, such as to facilitate a telephone conversation. According to an aspect, the system  602  further includes a video interface  676  that enables an operation of an on-board camera  630  to record still images, video stream, and the like. 
         [0063]    According to an aspect, a mobile computing device  600  implementing the system  602  has additional features or functionality. For example, the mobile computing device  600  includes additional data storage devices (removable and/or non-removable) such as, magnetic disks, optical disks, or tape. Such additional storage is illustrated in  FIG. 6B  by the non-volatile storage area  668 . 
         [0064]    According to an aspect, data/information generated or captured by the mobile computing device  600  and stored via the system  602  is stored locally on the mobile computing device  600 , as described above. According to another aspect, the data is stored on any number of storage media that is accessible by the device via the radio  672  or via a wired connection between the mobile computing device  600  and a separate computing device associated with the mobile computing device  600 , for example, a server computer in a distributed computing network, such as the Internet. As should be appreciated such data/information is accessible via the mobile computing device  600  via the radio  672  or via a distributed computing network. Similarly, according to an aspect, such data/information is readily transferred between computing devices for storage and use according to well-known data/information transfer and storage means, including electronic mail and collaborative data/information sharing systems. 
         [0065]      FIG. 7  illustrates one example of the architecture of a system for providing haptic feedback for communication of relevant information as described above. Content developed, interacted with, or edited in association with the haptic feedback system  128  is enabled to be stored in different communication channels or other storage types. For example, various documents may be stored using a directory service  722 , a web portal  724 , a mailbox service  726 , an instant messaging store  728 , or a social networking site  730 . The haptic feedback system  128  is operative to use any of these types of systems or the like for providing haptic feedback for communication of relevant information, as described herein. According to an aspect, a server  720  provides the haptic feedback system  128  to clients  705   a,b,c.  As one example, the server  720  is a web server providing the haptic feedback system  128  over the web. The server  720  provides the haptic feedback system  128  over the web to clients  705  through a network  710 . By way of example, the client computing device is implemented and embodied in a personal computer  705   a,  a tablet computing device  705   b  or a mobile computing device  705   c  (e.g., a smart phone), or other computing device. Any of these examples of the client computing device are operable to obtain content from the store  716 . 
         [0066]    Implementations, for example, are described above with reference to block diagrams and/or operational illustrations of methods, systems, and computer program products according to aspects. The functions/acts noted in the blocks may occur out of the order as shown in any flowchart. For example, two blocks shown in succession may in fact be executed substantially concurrently or the blocks may sometimes be executed in the reverse order, depending upon the functionality/acts involved. 
         [0067]    The description and illustration of one or more examples provided in this application are not intended to limit or restrict the scope as claimed in any way. The aspects, examples, and details provided in this application are considered sufficient to convey possession and enable others to make and use the best mode. Implementations should not be construed as being limited to any aspect, example, or detail provided in this application. Regardless of whether shown and described in combination or separately, the various features (both structural and methodological) are intended to be selectively included or omitted to produce an example with a particular set of features. Having been provided with the description and illustration of the present application, one skilled in the art may envision variations, modifications, and alternate examples falling within the spirit of the broader aspects of the general inventive concept embodied in this application that do not depart from the broader scope.