Abstract: In one embodiment, a method includes detecting by a computer system of an entity a client system identifier. The detection is accomplished using a first wireless communication method. The method further includes sending by the computer system the client system identifier to a social-networking system. The social-networking system includes multiple user profiles arranged in at least one social graph that stores relationships between the user profiles. The method also includes receiving at the computer system from the social-networking system user profile information from a user profile of the user profiles, the user profile identified by the social-networking system as being associated with the client system identifier. The method further includes sending information associated with the entity to the client system in response to receiving the user profile information.

Abstract: In one embodiment, a method includes receiving first information about a proximity of a first user, the first information comprising one or more images or one or more sounds of at least a portion of the proximity; identifying one or more second users within the proximity of the first user based at least in part on the first information; retrieving second information about each second user from a graph of a social-networking system, the graph comprising a plurality of nodes and edges connecting the nodes, at least one node in the graph corresponding to the first user, at least one node in the graph corresponding to each second user; categorizing the second users into one or more groups based on the second information about each second user; and sending the second information about each second user in a specific group to the first user.

Abstract: In one embodiment, a method includes receiving first information about a proximity of a first user, the first information comprising one or more images or one or more sounds of at least a portion of the proximity; identifying one or more second users within the proximity of the first user based at least in part on the first information; selecting a specific second user of particular interest to the first user based on behavior of the first user; retrieving second information about the specific second user from a graph of a social-networking system, the graph comprising a plurality of nodes and edges connecting the nodes, at least one node in the graph corresponding to the first user, at least one node in the graph corresponding to the specific second user; and sending the second information about the specific second user to the first user.

Abstract: In one embodiment, a method includes receiving information about a proximity of a plurality of users located within a covered enclosure, the information comprising one or more images or one or more sounds of at least a portion of the proximity, the information having been obtained from the proximity by a plurality client computing devices of the users automatically and without manual user input and with one or more sensors of each client computing device; identifying each user within the proximity based at least in part on the information; and determining a position of each user within the covered enclosure based at least in part on the information.

Abstract: In one embodiment, a method includes receiving first information about a proximity of a first user, the first information comprising one or more images or one or more sounds of at least a portion of the proximity, the first information having been obtained from the proximity by a client computing device of the first user automatically and with one or more sensors of the client computing device; identifying a second user within the proximity of the first user based at least in part on the first information; retrieving second information about the second user from a graph of a social-networking system, the graph comprising a plurality of nodes and edges connecting the nodes, at least one node in the graph corresponding to the first user, at least one node in the graph corresponding to the second user; and sending the second information about the second user to the first user.

Abstract: In one embodiment, a method includes receiving one or more audio/visual recordings from a user, the audio/visual recordings continuously capturing audio/visual information around the user, the audio/visual recordings being made by a client computing device of the user automatically and without manual user input and with one or more sensors of the client computing device; processing the audio/visual recordings to extract one or more audio/visual segments, each audio/visual segment covering a specific time period or relating to a specific event in the user's life; and posting the audio/visual segments to one or more points, respectively, along a timeline corresponding to the user's life.

Abstract: In one embodiment, a processor of a computing device executes a sequence of instructions that depends on one or more external operations. Software of the computing device determines a clocking policy for the processor during execution of the sequence of instructions. The clocking policy is based at least in part on a pattern of execution involving the sequence of instructions and the external operations, and the clocking policy modifies a clock speed of the processor. The software of the computing device applies the clocking policy to the processor during execution of at least a portion of the sequence of instructions.

Abstract: In one embodiment, a first computing device determines a number of data packets available to transmit from the first computing device to a second computing device. The determination is based on an available bandwidth and a payload capacity, and each of the data packets has a payload with the payload capacity. The first computing device determines a plurality of data items to transmit from the first computing device to the second computing device. The first computing device then ranks the data items and selects, based at least in part on the ranking of the data items and the payload capacities of the data packets, one or more particular ones of the data items to transmit from the first computing device to the second computing device in the data packets. The first computing device writes the particular ones of the data items to the payloads of the data packets.

Abstract: In particular embodiments, one or more computer systems of a social-networking system receive a first video stream from a content source, receive social content from a social graph of the social-networking system, and generate an overlay area comprising at least a portion of the social content. The social graph includes a plurality of nodes and edges connecting the nodes, the nodes comprising user nodes that are each associated with a particular user of the social-networking system. The one or more computer systems of the social-networking system determine a placement for the overlay area within the first video stream, generate a modified video stream using at least the first video stream and the overlay area, and provide the modified video stream for display on a display device. The overlay area is placed within the modified video stream according to the determined placement.

Abstract: Particular embodiments maintain social-networking information associated with a user, wherein the user is represented by a user node in a social graph. One or more nodes of the social graph may be associated with respective locations. A request for social information related to a location may be received from a computing device. The request may comprise a location of the computing device, an orientation of the computing device, and an identifier for the user. A relevance score may be determined for one or more proximate nodes based on the request, the social-networking information associated with the user, and the location information for the respective proximate node. Each proximate node may be associated with at least one location within a threshold distance from the location of the computing device. Particular embodiments may provide social-networking information associated with at least one of the proximate nodes for display in conjunction with an image.

Abstract: In particular embodiments, one or more computer systems of a social-networking system identify a user viewing video content on a first display device, identify the video content being viewed on the first display device by the user, and determine a second display device associated with the identified user. The one or more computer systems of the social-networking system determine an action related to the video content being viewed by the user on the first display device and provide one or more instructions to the determined second display device to display a call-to-action associated with the determined action.

Abstract: In particular embodiments, a social TV dongle receives a first video stream from a content source using a first interface and receives social content from a social-networking system using a second interface. The social TV dongle generates a modified video stream using at least the first video stream and the social content and sends the modified video stream to a display device using a third interface.

Abstract: In particular embodiments, one or more computer systems of a social-networking system identify media content being viewed on a first display device by a user of the social-networking system and receive an indication that the user has selected a time-sensitive button. The one or more computer systems of the social-networking system generate social content according to the identified media content and the indication that the user has selected the time-sensitive button. The one or more computer systems of the social-networking system update a graph of the social-networking system to include the social content. The graph has a plurality of nodes and edges connecting the nodes. The nodes include user nodes that are each associated with a particular user of the social-networking system.

Abstract: In particular embodiments a social networking system captures data associated with video content provided to a first user of a social-networking system, identifies, using the captured data, the video content provided to the first user, and updates a graph of the social-networking system to associate the first user with the identified video content. The graph of the social-networking system has a plurality of nodes and edges connecting the nodes. The nodes of the graph include user nodes that are each associated with a particular user of the social-networking system.

Abstract: In particular embodiments, one or more computer systems of a social-networking system provide social content for display in a mobile application running on a mobile device of a user of the social-networking system. The mobile application is configured to display the social content and an interface for selecting media content to view on a display device. The social content is from a social graph of the social-networking system. The social graph includes nodes and edges connecting the nodes. The nodes include user nodes that are each associated with a particular user of the social-networking system. The one or more computer systems of the social-networking system receive an indication from the mobile application that an option to view particular media content has been selected and provide one or more instructions to display the selected particular media content on the display device.

Abstract: In particular embodiments, one or more computer systems of a social-networking system determine information associated with a product displayed on a display device and access a database of known products. The one or more computer systems of the social-networking system determine, by comparing the database of known products with the determined information associated with the product, an identity of the product displayed on the display device. The one or more computer systems of the social-networking system provide one or more instructions to display media content related to the identified product.

Abstract: In particular embodiments, one or more computer systems of a social-networking system determine identities of one or more users in proximity to a display device and query a social graph of the social-networking system for social content associated with the determined identities. The social graph includes nodes and edges connecting the nodes. The nodes include user nodes that are each associated with a particular user of the social-networking system. The one or more computer systems of the social-networking system identify, using the social content, recommended media content for the one or more users in proximity to the display device and provide a playlist for display on the display device. The playlist includes the recommended media content for the one or more users in proximity to the display device.

Abstract: In particular embodiments, one or more computer systems of a social-networking system receive information associated with one or more users in proximity to a display device and access user data of the social-networking system. The one or more computer systems of the social-networking system determine, by comparing the user data with the received information associated with the one or more users, an identity of at least one of the users in proximity to the display device. The one or more computer systems of the social-networking system send one or more instructions based on the determined identities.

Abstract: In particular embodiments, one or more computer systems of a social-networking system determine available media content from one or more content sources and query a social graph of a social-networking system for social content associated with a user of the social-networking system. The social graph includes nodes and edges connecting the nodes. The nodes include user nodes that are each associated with a particular user of the social-networking system. The one or more computer systems of the social-networking system determine, using the social content and the available media content, a plurality of social coefficients for the user, determine, based on the determined social coefficients, recommended media content for the user, and provide the recommended media content for display in a programming guide on a display device.

Abstract: In one embodiment, a method includes, by software of a computing device, dynamically identifying a particular region of a display of the computing device. The method also includes, by the software and through a device driver of the computing device, dynamically adjusting one or more particular ones of a plurality of backlighting components of the display associated with the particular region.