Patent Publication Number: US-8538466-B2

Title: Message filtering system using profiles

Description:
PRIORITY 
     This application is a continuation-in-part of U.S. patent application Ser. No. 12/189,565, (now U.S. Pat. No. 8,352,557), entitled: Message Filtering System, filed on Aug. 11, 2008, by Gupta et al., which is incorporated herein by reference. 
    
    
     BACKGROUND OF THE INVENTION 
     Use of electronic messaging is growing at exponential rates. As the use of electronic messaging increases, additional risks and dangers are presented which require monitoring large amounts of data for inappropriate communications. The use of electronic messaging is even more concerning when one considers the number of children currently using electronic messaging. As has been well documented in the media, electronic messaging is commonly used by sexual predators and others who look to harm children. Monitoring of electronic messaging by parents is very difficult to do in real time, which results to children being exposed to inappropriate and dangerous information. 
     Currently, parents who are interested in viewing the electronic messages their children send and receive have limited options. Parents can view old e-mails or text messages directly on the child&#39;s communication device. In addition, logging software can save copies of the child&#39;s electronic messages on a server or workstation. However, these monitoring devices do not act in real time. Also, the parent is required to read all the text messages generated which is very time consuming. A need exists for a monitoring system which will automatically parse every message a child receives for inappropriate content and to notify parents if inappropriate content is received. 
     SUMMARY OF THE INVENTION 
     In one embodiment of the present invention, by monitoring SMS messages intended for delivery to a recipient, messages may be automatically filtered using lists of restricted words, user or device profiles, or ratings determined for the SMS messages. Messages may also be filtered based upon sender or recipient address as well as manually, by requiring a third party to review messages and make a delivery determination. 
     In one embodiment of the present invention, a system and method of filtering messages may be provided that includes receiving an SMS message intended for a recipient and receiving a user-restriction profile. The system and method includes determining whether the SMS message contains content that is indicated to be restricted by the user-restriction profile and, in response to the determination that the SMS message contains restricted content, delivering the SMS message to an authorized secondary receiver. Alternatively, in response to the determination that the SMS message does not contain restricted content, the SMS message may be delivered to the recipient. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an implementation of the present invention and, together with the description, serve to explain the advantages and principles of the invention. In the drawings: 
         FIG. 1  depicts one embodiment of a message filtering system consistent with the present invention; 
         FIG. 2  depicts one embodiment of the message management unit and message monitoring unit consistent with the present invention; 
         FIG. 3A  depicts one embodiment of a communication device consistent with the present invention; 
         FIG. 3B  depicts one embodiment of a monitoring unit consistent with the present invention; 
         FIG. 4  is an illustrative example of one embodiment of the message filtering system which is consistent with the present invention; and 
         FIG. 5  is a flowchart of one embodiment of a method for analyzing SMS messages for restricted content. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     Referring now to the drawings which depict different embodiments consistent with the present invention, wherever possible, the same reference numbers will be used throughout the drawings and the following description to refer to the same or like parts. 
       FIG. 1  depicts one embodiment of a message filtering system  100  consistent with the present invention. The message filtering system  100  includes a network  102 , a communication device A  104 , a communication device B  106 , and a monitoring unit  108 . The message filtering system  100  further includes a user terminal  110 , a message management unit  112  and a message monitoring unit  114 . In general, the message management unit  112  manages and controls the communications traffic of the network  102 . The message management unit  112  also routes messages between the communication devices  104  and  106 . When the message management unit  112  receives a message from an address of a predetermined communication device  104  and  106  address, it re-routes the message to the message monitoring unit  114 . The message monitoring unit  114  compares the contents of the message with identifiers stored in an identifier library (not shown in  FIG. 1 ). If an identifier in the message matches an identifier in the identifier library, the message is forwarded through the message management unit  112  to a monitoring unit  108 . The message monitoring unit  114  requests authorization from the monitoring unit  108  to send the message to the destination address. Further, the terminal unit  110  may allow a user to register monitoring unit  108  addresses, communication device  104  and  106  addresses, communication device  104  and  106  addresses from which messages are restricted, and identifiers into one or more libraries stored on the message monitoring unit  114  or the message management unit  112 . 
     In one embodiment, in addition to previously mentioned addresses and identifiers, profiles may also be registered with the message management unit  112  or the message monitoring unit  114 . Profiles may include identifiers grouped together and associated with a user, a device, or both. Preferences, such as a profile rating may also be included within or associated with the profiles. The profiles may be stored with the identifiers in the identifier library, in a separate library for profiles, or separately in another storage device (not shown). The profiles may allow for a finer degree of filtering than an identifier list can provide. For example, an identifier list may restrict delivery for all messages intended for delivery to a registered communication device (i.e.,  104  or  106 ) using an identifier list, whereas using profiles may allow for a profile to be selected for each user or device, which may provide different degrees of filtering based upon the profile associated with the user. 
     Profiles may be generated by users when an account is initially set up. A telephonic menu, operated assisted entry, online entry by the user, or many other methods may be used for generating profile information. In one embodiment, a parent may enter specific words or phrases, in addition to, or in place of, generic words or lists that a user can select from, to have restricted from delivery to either their or their children&#39;s phone. At any time the user may be allowed access to update profiles as the need arises. 
     The profile may contain words or phrases similar to the identifiers. However, by using profiles, an individual determination may be made as to appropriate content based on a device or a user, rather than a blanket denial, as may occur by simply looking for an identifier in a library. For example, in one embodiment, various identifiers that are acceptable for a person would be omitted from the profile, whereas inappropriate identifiers would be retained in the profile. Upon locating an unacceptable identifier, based upon the inclusion within the profile, the message will be blocked, as previously described. 
     In addition to written identifiers, more frequently, images are being included within SMS messages. In one embodiment, a determination may also be made as to whether an included image may be objectionable. Various software products exist today to help determine if an image might contain things such as violence or nudity. By including an image evaluation module, an option for users to filter certain images may be provided and the preference stored within the profile. 
     In another embodiment, a profile rating may be assigned to a profile belonging to a user or group of users that may allow entire lists of identifiers to be blocked or allowed based simply on one profile rating. For example, in addition to identifiers, content ratings may be stored whereby a content rating represents a group of identifiers associated with a particular segment of the population (e.g., Youth, Teen, Mature Adult). Identifiers that may be appropriate for an adult may not be appropriate for a youth, and classifying various identifiers within a content rating may allow for a greater degree of message delivery customization with minimal configuring and setup time needed. By comparing a content rating associated with one or more identifiers with the profile rating—if a profile rating is present—a determination of whether to deliver a message can be made more efficiently than using one or more lists of identifiers. 
     Entire messages may be rated based on the presence of a single identifier, or alternatively, portions of a message may be rated separately. Multiple ratings may be particularly useful for large messages, where there are minimal offensive identifiers. By being able to apply ratings to individual portions of messages, non-offending portions may still be delivered. By comparing the content rating given to the message to the profile rating stored for the intended recipient, the determination to deliver the message may be simplified, while allowing greater flexibility in recognition of age or maturity levels, among other criterion. 
     Developing ratings for the identifiers contained within messages may occur by using automated or standardized methods before implementation of the message filtering, manually as identifiers are entered, or any number of known ways for rating content. In general, if a word is unrecognized or not rated, procedures described herein may allow for the message to be screened by a secondary device (e.g., a parent&#39;s device), as is described for the embodiment employing lists of identifiers. 
     The message monitoring unit  114  and message management unit  112  may be embodied by one or more servers. Alternatively, each of the message monitoring unit  114  and message management unit  112  may be implemented using any combination of hardware and software, whether as incorporated in a single device or as a functionally distributed across multiple platforms and devices. 
     In one embodiment, the network  102  is a cellular network, a TCP/IP network, or any other suitable network topology. In another embodiment, the message monitoring unit  114  and the message management unit  112  may be servers, workstations, network appliances or any other suitable data storage devices. In yet another embodiment, message monitoring unit  114  and message management unit  112  may be combined into a single server, workstation, network appliance or suitable data storage device. In another embodiment, the communication devices  104  and  106  may be any combination of cellular phones, telephones, personal data assistants, or any other suitable communication devices. In another embodiment, the monitoring unit  108  may be any combination of cellular phones, telephones, personal data assistants, or any other suitable communication devices. In addition, terminal unit  110  may be a server, workstation, network appliance or any other suitable network terminal device. 
     In one embodiment, the network  102  may be any private or public communication network known to one skilled in the art such as a local area network (“LAN”), wide area network (“WAN”), peer-to-peer network, cellular network or any suitable network, using standard communication protocols. The network  102  may include hardwired as well as wireless branches. 
     In another embodiment, the message management unit  112  may be configured to restrict messages between communication devices  104  and  106 . The message management unit  112  may be configured to store a list of restricted addresses for each communication device  104  and  106 . In addition, the message management unit  112  may be configured to store the address of a monitoring unit  108  where messages from restricted addresses have been previously re-routed and denied delivery. 
     In yet another embodiment, the message monitoring unit  114  may be configured to store a list of words, profiles, and/or content ratings associated with the lists of words in memory. When a message from a communication device  104  and  106  is received at the message management unit  112 , the message management unit  112  may forward the message to the message monitoring unit  114 . The message monitoring unit  114  may parse the message for words that match the words, profiles, and/or content ratings associated with the lists of words stored in the memory of the message monitoring unit  114 . If a match is found, the message monitoring unit  114  may re-route the message to the monitoring unit  108  for delivery approval. 
     In another embodiment, the monitoring unit  108  is configured to allow a user to determine if the message may be forwarded on to the original destination address. If the user declines to send the message to the original address, the message is stored on the message monitoring unit  114  and the message is not sent to the destination address. If the user allows the message to pass through, the message monitoring unit  114  transfers the message to the message management unit  112  which transmits the message to original destination addresses of the communication devices  104  and  106 . 
     As an illustrative example of the operation of the message filtering system  101 , communication device A  104  transmits a message to communication device B  106 . First, the message may be sent to the message management unit  112 . The message management unit  112  compares the address of communication device A  104  with a list of addresses stored in memory to determine if communication device A  104  is a registered or restricted address. If communication device A  104  is restricted from sending messages to communication device B  106 , the message may not sent to communication device B  106 . 
     If communication device A  104  is a registered unit, the message management software determines if communication device B  106  is a restricted communication device. If communication device B  106  is a restricted address, the message may be stored on the message monitoring unit  114  and the message is not sent. If communication device B  106  is not a restricted unit, the message may be sent to the message monitoring unit  114  which locates words within the message and compares the words to a library of words on the message monitoring unit  114 . If any of the words of the message match a word in the library, the message monitoring unit  114  forwards the message to the monitoring unit  108  in real time. 
     Alternatively, if profile information pertaining to either a user or the device is included within the libraries, as described previously, rather than matching a word in the library, the message monitoring unit  114  may determine matches for words in the profile. Similarly, the rating concept described previously may be used in place of, or in addition to, searching a word list. 
     In one embodiment, the monitoring unit  108  displays the message to a user, via the monitoring unit  108 . The user may be given the option of allowing transmission of the message to communication device B  106  or denying transmission of the message. If the user denies transmission, the message may be stored on the message monitoring unit  114  and may be not sent to communication device B  106 . If the user allows transmission, the message may be sent to the message management unit  112  which transmits the message to communication device B  106 . In one embodiment, communication device B  106  may be a parent&#39;s phone, where communication device A  104  is a child&#39;s phone, and the parent is the user that reviews the message for appropriateness of delivery. 
       FIG. 2  depicts one embodiment of a message management unit  202  and message monitoring unit  218  consistent with the present invention. The message management unit  202  includes a network I/O device  204 , a processor  206 , a memory  208  storing message distribution software  210  and an address library  212 . The message distribution software  210  running in memory  208  of the message management unit  202  is operatively configured to receive a message  216  from the network I/O device  204  and to extract the sending communication device address as well as the destination communication device address from the message. In addition, the message distribution software  210  is operatively configured to compare the sending communication device address of the message  216  against a list of addresses restricted from sending messages to the destination address. If the sending address is identified in the address library  212 , the message is re-routed via the network  214  to the message monitoring unit  218  for further analysis. 
     In one embodiment, the processor  206  may be a central processing unit (“CPU”), a application specific integrated circuit (“ASIC”), a microprocessor or any other suitable processing device. The memory  208  may include a hard disk, random access memory, cache, removable media drive, mass storage or configuration suitable as storage for data, instructions, and information. In one embodiment, the memory  208  and processor  206  may be integrated. The memory may use any type of volatile or non-volatile storage techniques and mediums. The network I/O line  204  device may be a network interface card, a plain old telephone service (“POTS”) interface card, an ASCII interface card, or any other suitable network interface device. The network I/O interface devices  204  and  220  may be a network interface card, a wireless network interface card or any other suitable network interface device. The message distribution software  210  may be a compiled program running on a server, a process running on a microprocessor or any other suitable port control software. 
     The message monitoring unit  218  includes a network I/O device  220 , a processor  222 , a memory  224  storing registration software  226  and message analysis software  228 , an identifier library  230 , and a message library  232 . The message analysis software  228  is operatively configured to extract a plurality of identifiers from the body of the message  216 . Each identifier extracted is compared to a list of identifiers stored in the identifier library  230 . If any one of the identifiers matches an identifier in the identifier library  230 , the message  216  is re-routed to a monitoring unit, such as monitoring unit  108  from  FIG. 1 , via the network I/O device  220 . 
     Alternatively, in an embodiment that includes user profiles, the identifiers may be compared with stored profiles located in the identifier library  230 , a separate library, or memory (not shown). If ratings are provided in addition to, or used in place of, an identifier list, the profile ratings described previously may be compared to the content rating. 
     If the monitoring unit allows the message  216  to proceed to the destination address, the authorization is received by the message monitoring unit  218  via the network I/O device  220  and the message  216  is sent to the message management unit  202  via the network  214 . If the monitoring unit denies the message  216 , the message is stored in the message library  232 . 
     In one embodiment, the processor  222  may be a central processing unit (“CPU”), a application specific integrated circuit (“ASIC”), a microprocessor or any other suitable processing device. The memory  224  may include a hard disk, random access memory, cache, removable media drive, mass storage or configuration suitable as storage for data, instructions, and information. In another embodiment, the memory  224  and processor  222  may be integrated. The memory may use any type of volatile or non-volatile storage techniques and mediums. The network I/O device  220  may be a network interface card, a plain old telephone service (“POTS”) interface card, an ASCII interface card, a wireless transceiver, or any other suitable network interface device. The registration software  226  may be an a web server application, a compiled program running on a server, a process running on a microprocessor or any other suitable registration software. The message analysis software  228  may be a compiled program running on a server, a process running on a microprocessor or any other suitable registration software. 
     The registration software  226  is operatively configured to interact with a terminal unit, such as terminal unit  110  from  FIG. 1 . The registration software  226  is configured to collect a listing of communication device addresses between which communication is restricted. The registration software  226  receives the communication device addresses via the network I/O device  220  and forwards the addresses to message distribution software  210  for storage in the address library  212  of the message management unit  202 . In addition, the registration software  226  gathers a listing of restricted identifiers for the received communications device addresses which may be stored in the identifier library  230 . Alternatively, user profiles or profile ratings may also be generated for embodiments that include the use of profiles or ratings. Various methods of generating a profile or a profile rating may be used. The registration software  226  may interact with the terminal unit using a user interface such as, but not limited to, a web page, a compiled program, a text based ASCII terminal or any other suitable user interface. 
     In one embodiment, the message analysis software  228  queries online servers to update the list of identifiers, profiles, or profile ratings, available in the identifier library  230 . As an illustrative example, the identifiers in the identifier library may be words, such as slang words. In this example, the message analysis software  228  queries web sites which store currently listings of slang words including, but not limited to slang dictionary web sites, text message shorthand dictionary and any other online source of current slang or shorthand messaging words. The message analysis software  228  may be configured to compare the contents of each web site with the current contents in the identifier library  230  and to update the contents of the identifier library  230  as needed. 
     In another embodiment, the registration software  226  may allow a user to configure the message monitoring unit  218 . In an illustrative example, a user located at a terminal unit, such as a cellular phone or workstation, may connect to the registration software  226  on the message monitoring unit  218  via the network  214 . The registration software  226  may present a user interface to the terminal unit where the user may enter destination communication device addresses as well as communication device addresses which are restricted from communicating with the destination communication device addresses. In addition, the registration software  226  may query the identifier library  230  and present a complete list of all identifiers to a user on the terminal unit. The user may then select the identifiers which will initiate the re-routing of a message containing the identifier sent to a destination communication device address. In one embodiment, identifiers may be selected and stored in one or more profiles, such as a user profile as described previously, which may be specific to a device or a user. For embodiments including ratings, rating information may also be selected for a user profile using a similar procedure on the terminal unit. 
       FIG. 3A  depicts one embodiment of a communication device  302  consistent with the present invention. The communication device  302  includes a processor  304 , an audio output  306 , a display output  308 , a network I/O device  310 , and memory  312  running messaging software  314 . The communication device  302  further includes a display unit  316  connected to a display output  308 , an audio unit  318  connected to a audio output  306 , and a user input  319  connected to a user input device  321 , such as but not limited to a mouse or a keypad. The messaging software  314  is operatively configured to send and receive messages over the network  320  via the network I/O device  310 . In addition, the processor  304  and messaging software  314  are operatively configured to transmit the message to the display output  308  for presentation on the display unit  316  and also to present an audio tone to the audio output  306  for playing of an audio tone on the audio unit  318 . 
     In one embodiment, the processor  304  may be a central processing unit (“CPU”), a application specific integrated circuit (“ASIC”), a microprocessor or any other suitable processing device. The memory  312  may include a hard disk, random access memory, cache, removable media drive, mass storage or configuration suitable as storage for data, instructions, and information. In one embodiment, the memory  312  and processor  304  may be integrated. The memory may use any type of volatile or non-volatile storage techniques and mediums. The network I/O device  310  may be a network interface card, a plain old telephone service (“POTS”) interface card, an ASCII interface card, or any other suitable network interface device. The messaging software  314  may be a short messaging service (“SMS”) program, multimedia messaging service (“MMS”), a compiled program running, a process running on a microprocessor or any other suitable registration software. 
     In one embodiment, the network  320  may be any private or public communication network known to one skilled in the art such as a Local Area Network (“LAN”), Wide Area Network (“WAN”), Peer-to-Peer Network, Cellular network or any suitable network, using standard communication protocols. The network  320  may include hardwired as well as wireless branches. 
       FIG. 3B  depicts one embodiment of a monitoring unit  332  consistent with the present invention. The monitoring unit  322  includes a processor  324 , an audio output  326 , a display output  328 , a network I/O device  330 , memory  332  running monitoring software  334 . The monitoring unit  322  further includes a display unit  336  connected to the display output  328 , a audio unit  338  connected to the audio output  326 , and a user input  340  connected to a user input device  342 , such as but not limited to a keyboard or a mouse. The monitoring software  314  is operatively configured to send and receive messages to and from the message monitoring unit, such as the message monitoring unit  218  of  FIG. 2 , over the network  320  via the network I/O device  330 . In addition, the processor  324  and monitoring software  334  are operatively configured to transmit a message to the display output  328  for presentation on the display unit  336  and also to present a audio tone to the audio output  326  for playing of an audio tone on the audio unit  338 . 
     In one embodiment, the processor  324  may be a central processing unit (“CPU”), a application specific integrated circuit (“ASIC”), a microprocessor or any other suitable processing device. The memory  332  may include a hard disk, random access memory, cache, removable media drive, mass storage or configuration suitable as storage for data, instructions, and information. In one embodiment, the memory  332  and processor  324  may be integrated. The memory may use any type of volatile or non-volatile storage techniques and mediums. The network I/O device  330  may be a network interface card, a plain old telephone service (“POTS”) interface card, an ASCII interface card, a wireless transceiver, or any other suitable network interface device. The messaging software  334 , may be an a short messaging service program, a compiled program running, a process running on a microprocessor or any other suitable registration software. 
     In one embodiment, the monitoring unit  322  receives a message from the message monitoring unit via the network  334 . The network I/O device  330  routes the message to the messaging software  334 . The monitoring software  334  receives a message from the message monitoring software. The monitoring software  334  transmits the message to the display output  328  for display on the display unit  336 . A user viewing the message on the display unit  336  has the option of confirming or denying the delivery of the message via the user input device. The monitoring software  334  sends the response received from the user input device  321  to the message monitoring unit  322 . 
       FIG. 4  is an illustrative example of one embodiment of a message filtering system implemented according to the present invention. In this embodiment, a plurality of communications units  402  are connected to a network  404  along with a plurality of monitoring units  406 , a message management unit  408 , a message monitoring unit  410  and a terminal unit  412 . A user may register addresses of communication devices  402  in the message management unit  408 . In addition, a user may register addresses of communication devices  403  that are restricted from communicating with the registered communication devices  402 . Once the addresses are registered, the user is shown a list of keyword identifiers which the user may select to trigger the re-routing of a message. As described previously, an alternate embodiment may use profile and profile ratings rather than the list of keyword identifiers for triggering the re-routing of messages. 
     When one of the plurality of communication devices  402  transmits a message to another communications unit  403 , the message is first transmitted to the message management unit  408 . Software operating on the message management unit checks the source communication device  402  address and the destination communication device  403  address with the list of registered communication device  402  addresses and restricted communication device  403  addresses. If the message source address is a restricted communication device  403  address, the message is not sent to the destination communication device  403  address. Alternatively, it should be understood that a user may choose not to block messages based upon addresses, and instead use one or more of an identifier list, profiles, or profile ratings to filter messages. 
     If the message is sent from a registered communication device  402  or a non restricted communication device  402 , the message is transmitted to the message monitoring unit  410 . The message monitoring unit  410  parses the message for identifiers, such as words, and compares each identifier located with a list of identifiers in a identifier database, a profile, or a profile rating stored in a library on the message monitoring unit  410 . If the identifiers in the message match any one identifier in the identifier library or profile, or if the message has been given an incompatible content rating, the message is rerouted to at lease one monitoring unit  406 . The monitoring unit  406  displays the message and prompts a user to approve the delivery of the message to the destination communication device  403  address. If the user denies the delivery, the message is stored in a message library on the message monitoring unit  410  and is not sent to the destination communication device address  403 . If delivery of the message is permitted, the message monitoring unit  410  transmits the message to the message management unit  408  which routes the message to the destination communication device  403  address. In yet another embodiment, the message monitoring unit  410  and monitoring unit  406  are combined into a single device. 
     Because the message filtering system allows for real time monitoring of messages, messages can be monitored for inappropriate language or content. With the abundance of electronic messages generated each day, having the ability to automatically review and divert questionable messages reduces the time required to manage a data communication system. It is understood that, in one embodiment, live real time monitoring by the second device may be disabled, and messages determined to be acceptable by other automatic functions (i.e., identifier comparisons) may still be sent without secondary user intervention. 
     In yet another illustrative embodiment, when one of the plurality of communication devices  402  transmits a message to another communications unit  403 , the message is first transmitted to the message management unit  408 . Software operating on the message management unit checks the source communication device  402  address and the destination communication device  403  address with the list of registered communication device  402  addresses and identified communication device  403  addresses. If the message source address is an identified communication device address or a registered communication device  402  address, the message is sent to the destination communication device address and to at least one message monitoring unit  406 . Additional messages sent between the source communication device  402  or destination communication device  403  are mirrored on the message monitoring unit  406 . By allowing the mirroring of messages between two communication devices, a parent or a guardian of children is capable of monitoring communications between children and others thereby improving the security of communications between children and others. 
       FIG. 5  is a flowchart of a method for analyzing SMS messages for restricted content. In step  502 , an SMS message intended for a recipient may be received. The recipient may be a user with message filtering enabled for themselves or their communication device, or may be another person with whom the user with message filtering enabled is attempting to communicate with. In other words, message filtering may occur for both inbound and outbound SMS messages in certain embodiments. 
     In order to obtain information regarding the necessity to filter a particular message, a user-restriction profile may be received in step  504 . The user restriction profile may contain lists of content deemed inappropriate for a particular user, such as words or phrases. The user restriction profile may also contain an overall profile rating for embodiments in which message content is rated. 
     In one embodiment, a user-restriction profile may also pertain to the receiver of the SMS message. For example, if the receiver has restrictions on their ability to receive certain types of SMS messages, the recipient&#39;s user-restriction profile may be received and further actions may take place based on the receiver&#39;s profile. 
     Whether the SMS message contains content that is indicated to be restricted by the user-restriction profile may be determined in step  506 . Based upon an evaluation of the message, such as comparing a word by word analysis or an overall rating that has been applied by a rating module with information contained within the received user-restriction profile, the determination can be made as to whether the SMS message includes restricted content. As described previously, an entire SMS message or portions of an SMS message may be rated separately, allowing portions of messages to be delivered, while excluding offensive portions. In one embodiment, excluded portions may include a message regarding the exclusion to inform a user of the reasons for missing portions. 
     In response to the determination that the SMS message contains restricted content, in step  508  the SMS message may be delivered to an authorized secondary receiver. An authorized secondary receiver may be a person or service tasked with the responsibility of reviewing SMS messages, such as a parent or a monitoring service provider hired by a child&#39;s parent to review questionable SMS messages. In some embodiments, the secondary receiver may simply be a server, such as a web server, that allows SMS messages to be compiled for later review by parents or other interested parties. Also, in delivering the SMS message to an authorized secondary party, the message may be sent for information purposes only (such as an alert), or, in other embodiments, the secondary party may have an override option with the ability to allow a message to be sent to the intended recipient despite being flagged as restricted. Allowing the secondary party the ability to override a message previously determined to include restricted content allows greater flexibility in cases where unknown words appear in messages or any number of other circumstances where an SMS message is mistakenly flagged as restricted. 
     In step  510 , in response to the determination that the SMS message does not contain restricted content, the SMS message may be delivered to the recipient. The determination may be made automatically and without user intervention, as described previously, but the determination may also be made by the secondary user when the SMS message is sent to the secondary user for review. 
     While various embodiments of the present invention have been described, it will be apparent to those of skill in the art that many more embodiments and implementations are possible that are within the scope of this invention. Accordingly, the present invention is not to be restricted except in light of the attached claims and their equivalents.