A method comprising the following successive steps: sensing, by a device paired in a device cloud with a first portable computing device of a first user comprising a plurality of radios, a second portable, networked, computing device of a second user within a threshold proximity, wherein the second computing device comprises a processor, one or more radios, and a memory coupled to the processor; establishing, by the device paired with the first computing device, a direct connection with the second device; retrieving, by the device paired with the first computing device, initial information from the second device, the initial information comprising a social-networking system user identifier; after authenticating the second computing device, by the device paired with the first computing device, based on the initial information, granting, by the device paired with the first computing device, credentials to the second computing device, wherein the credentials granted allow the second computing device to communicate with one or more third computing devices, wherein one or more of the third computing devices comprise a processor, one or more radios, and a memory coupled to the processor, and wherein authenticating the second computing device comprises: sending, by the second computing device of the second user, a token comprising said initial information associated with the second user to said computing device paired in a device cloud with the first computing device; searching, by the computing device of the device cloud, a social graph for the identity of the second user associated with the token; retrieving, by the computing device of the device cloud, a user profile associated with the identity of the second user from the social graph; displaying, by the computing device of the device cloud, the user profile; requesting the first user to provide input to said first portable computing device of the first user, confirming the identity of the second user and permitting the second user to pair the second computing device of the second user with the computing device of the device cloud. sensing, by a device paired in a device cloud with a first portable computing device of a first user comprising a plurality of radios, a second portable, networked, computing device of a second user within a threshold proximity, wherein the second computing device comprises a processor, one or more radios, and a memory coupled to the processor; establishing, by the device paired with the first computing device, a direct connection with the second device; retrieving, by the device paired with the first computing device, initial information from the second device, the initial information comprising a social-networking system user identifier; after authenticating the second computing device, by the device paired with the first computing device, based on the initial information, granting, by the device paired with the first computing device, credentials to the second computing device, wherein the credentials granted allow the second computing device to communicate with one or more third computing devices, wherein one or more of the third computing devices comprise a processor, one or more radios, and a memory coupled to the processor, and wherein authenticating the second computing device comprises: sending, by the second computing device of the second user, a token comprising said initial information associated with the second user to said computing device paired in a device cloud with the first computing device; searching, by the computing device of the device cloud, a social graph for the identity of the second user associated with the token; retrieving, by the computing device of the device cloud, a user profile associated with the identity of the second user from the social graph; displaying, by the computing device of the device cloud, the user profile; requesting the first user to provide input to said first portable computing device of the first user, confirming the identity of the second user and permitting the second user to pair the second computing device of the second user with the computing device of the device cloud. sending, by the second computing device of the second user, a token comprising said initial information associated with the second user to said computing device paired in a device cloud with the first computing device; searching, by the computing device of the device cloud, a social graph for the identity of the second user associated with the token; retrieving, by the computing device of the device cloud, a user profile associated with the identity of the second user from the social graph; displaying, by the computing device of the device cloud, the user profile; requesting the first user to provide input to said first portable computing device of the first user, confirming the identity of the second user and permitting the second user to pair the second computing device of the second user with the computing device of the device cloud.