Abstract: In one embodiment, receiving, at a first computing device associated with a social-networking system and from a second computing device, a first request to verify an identity of a user of the social-networking system; sending, by the first computing device and to a mobile device associated with the user, a second request for information about the user; receiving, at the first computing device and from the mobile device, the information about the user; determining, by the first computing device, a confidence score indicating a probability that the identity of the user is true based on the information about the user received from the mobile device and information available to the social-networking system; and sending, by the first computing device and to the second computing device, the confidence score.

Abstract: In one embodiment, the first processors of a mobile device determine an operating condition of the mobile device. These operating conditions are based on a current velocity of the mobile device, and the current time of day. If the operating conditions satisfy an operating criteria for the mobile device, the first processors send a message to second processors of the mobile device, causing one or more of the second processors to wake up from a sleeping state to an active state.

Abstract: In one embodiment, a method comprises maintaining a set of connections for the first computing device, intercepting a request from a software application executing on the first computing device to establish a connection with a second computing device, selecting from the set of connections an available connection, and assigning the available connection to the software application for connecting to the second computing device.

Abstract: In one embodiment, a geo-social networking system records location data of a user, generate a set of recommendations based on the user's location data, and present one or more recommendations of the set of recommendations to the user based on the user's current location.

Abstract: In one embodiment, a method comprises monitoring one or more sensors of a computing device that is in a locked state and is associated with an authorized user of a social-networking system, identifying, based on information associated with the authorized user, content to be downloaded from the social-networking system, and downloading the identified content from the social-networking system, wherein the identified content is stored for display after the computing device is unlocked. The downloading may be in response to determining that an operation to unlock the computing device is imminent, and the content may include commonly-viewed content. The downloading may include downloading one or more notifications from the social-networking system. The downloading may be based on one or more previous habits of the authorized user. The information associated with the authorized user may include information indicating that the authorized user habitually checks one or more sites or feeds.

Abstract: In one embodiment, a method includes receiving sensor data, while a mobile electronic device associated with a member of a social-networking system is in a first operation state, from one or more sensors of the mobile electronic device and obtaining characteristic information maintained by the social-networking system, the social-networking system being remote from the mobile electronic device. The method also includes verifying that a current user of the mobile electronic device is the member by comparing the sensor data to the characteristic information. The method also includes, in response to the verifying, transitioning from the first operation state to a second operation state.

Abstract: In one embodiment, a method includes receiving identifier-information from a device of a first user, wherein the identifier-information is associated with a source of an incoming communication; accessing a social graph including nodes and edges, where the nodes include a first node corresponding to the first user, and second nodes corresponding to respective second users; determining whether one or more reporting users, corresponding to respective second nodes within a specified degree of separation from the first node, have flagged the source of the incoming communication as a spam source; and sending, to the first user, a spam-notification object that includes information identifying one or more of the reporting users.

Abstract: In particular embodiments, one or more computer-readable non-transitory storage media embody software that is operable when executed to receive an audio waveform fingerprint and a client-determined location from a client device. The received audio waveform fingerprint may be compared to a database of stored audio waveform fingerprints, each stored audio waveform fingerprint associated with an object in an object database. One or more matching audio waveform fingerprints may be found from a comparison set of audio waveform fingerprints obtained from the audio waveform fingerprint database. Location information associated with a location of the client device may be determined, and the location information may be sent to the client device. The client device may be operable to update the client-determined location based at least in part on the location information.

Abstract: An online system identifies a conversion of an advertisement when a client device associated with an online system user is within a threshold distance of a physical location associated with the advertisement. The client device sends obfuscated information identifying the user associated with the client device and the location of the client device to an independent third party when the client device is within a threshold distance of the physical location associated with the advertisement. Using information from the client device, the third party requests information from the online system identifying one or more groups including the user. Based on information identifying groups including various online system users, the third party generates information identifying conversions associated with different groups. The online system may determine effectiveness of various advertisements using the information from the third party identifying conversions associated with different groups.

Abstract: In one embodiment, the first processors of a mobile device determine an operating condition of the mobile device. These operating conditions are based on a current velocity of the mobile device, and the current time of day. If the operating conditions satisfy an operating criteria for the mobile device, the first processors send a message to second processors of the mobile device, causing one or more of the second processors to wake up from a sleeping state to an active state.

Abstract: In one embodiment, the first processors of a mobile device determine an operating condition of the mobile device. These operating conditions are based on a current velocity of the mobile device, and the current time of day. If the operating conditions satisfy an operating criteria for the mobile device, the first processors send a message to second processors of the mobile device, causing one or more of the second processors to wake up from a sleeping state to an active state.

Abstract: In one embodiment, a method includes, by one or more computing devices of an online social network, receiving, from a client system at a first location, an audio input from an unknown user, identifying a first user of the online social network who is proximate to the first location, identifying the unknown user as a second user of the online social network based on a comparison of the audio input to one or more voice recordings of one or more candidate users stored by the online social network, respectively, wherein each voice recording comprises audio data for auditory identification of a unique user of the online social network, and wherein each candidate user is within a threshold degree of separation of the first user within the online social network; and sending customized content to one or more of the first user or the second user based on their social-networking information.

Abstract: In one embodiment, a geo-social networking system determines a user's current location, generate a list of places near the user's current location, rank the list of places based on distance, relevancy and a configurable rule set, and automatically checks in the user at the top ranked place.

Abstract: In one embodiment, a method includes implementing an ad hoc network protocol comprising transmitting, from a first mobile device, one or more neighbor messages that includes a first user identifier corresponding to a first user of the first mobile device, wherein the first user identifier corresponds to a user account of the first user in a social networking system, receiving, at the first mobile device, one or more second neighbor messages from one or more second mobile devices that include second user identifiers corresponding to respective second users of the one or more second mobile devices, wherein the second user identifiers correspond to respective user accounts of one or more second users in the social networking system, and storing, at the first mobile device, information received in the one or more second neighbor messages for access by one or more applications hosted on the first mobile device.

Abstract: In particular embodiments, a computing device may receive authentication information provided by a temporary user and retrieve personal information associated with the temporary user from a server using the authentication information. The device may present a personalized user interface on a screen of the computing device for the temporary user, the personalized user interface being generated based on the personal information. The device may detect a terminating event that indicates access to the computing device by the temporary user is to be disabled. The terminating event may be detected by determining that a biometric information associated with the temporary user is undetectable, or determining that the computing device is put down. In response to the detected terminating event, information associated with the temporary user may be removed from the computing device, and the computing device may be reverted to a default state.

Abstract: In one embodiment, a method includes accessing an image file associated with a first user of a communication system and detecting a face in an image corresponding to the image file. The method also includes accessing an event database associated with the communication system, the event database containing one or more events, each being associated with the first user and one or more second users of the communication system. The method also includes determining one or more candidates among the second users to be matched to the face, where each candidate is associated with an event in the communication system, and where a time associated with the image is in temporal proximity to a time associated with the event.

Abstract: In one embodiment, a method includes generating a waveform fingerprint based on captured ambient audio data; calculating a location of the computing system; sending the generated waveform fingerprint and the location to a server; and receiving instructions from the server to adjust one or more device settings of an output device of the computing system. The instructions being based at least in part on identifying one or more audio fingerprints that match the generated waveform fingerprint and correlating one or more of the identified audio fingerprints to a physical environment of the computing system. The method also includes adjusting one or more of the device settings of the output device of the computing system in accordance with the received instructions.

Abstract: In one embodiment, a social networking system determines a user identifier of a caller placing a call to a receiving user based on the call's phone number, accesses one or more data stores for information associated with the caller, and present to the receiving user the information associated with the caller.

Abstract: In one embodiment, device status information is received from a mobile device of a first user. The device status information may include: information related to power for the device, information related to network connectivity of the device, or a notification mode of the device. Outgoing messages may be identified to be sent to the first user. A value may be computed for each of the outgoing messages. The computed value may be based on an affinity score determined with respect to an originator of the message and the first user. Based on the computed value, at least one of the outgoing messages may be selected for placement into an outgoing message queue. Upon the detection of a triggering condition, the selected messages may be sent to the mobile device. The triggering condition may be based on the device status information and the respective values of the outgoing messages.

Abstract: In one embodiment, a method includes accessing an image file associated with a first user of a communication system and detecting a face in an image corresponding to the image file. The method also includes accessing an event database associated with the communication system, the event database containing one or more events, each being associated with the first user and one or more second users of the communication system. The method also includes determining one or more candidates among the second users to be matched to the face, where each candidate is associated with an event in the communication system, and where a time associated with the image is in temporal proximity to a time associated with the event.