Abstract: In one embodiment, a method includes receiving, from a client system of a first user of an online social network, an unique identifier associated with a second user of the online social network, the unique identifier being sent responsive to a communication between the second user and the first user, accessing a social graph including first and second nodes corresponding to the first and second users, respectively, identifying the second user based on the unique identifier, retrieving profile information associated with the second user and a privacy setting associated with the second user, determining whether the information is visible to the first user based on the privacy setting and a degree of separation in the social graph between the first node and the second node, and sending, to the client system, the profile information that is visible to the first user for display in association with the communication.

Abstract: Various embodiments of the present disclosure can include systems, methods, and non-transitory computer readable media configured to perform a code based technique to identify at least one potential connection for a user. The code based technique comprises generating a code associated with the at least one potential connection; providing the code to a mobile device of the at least one potential connection; and providing information to allow the user to establish a connection with the at least one potential connection.