Meta Platforms, Inc.
Determining a primary user of a client device and propagating settings of the primary user from the client device to an online system

Abstract:

An online system propagates settings from a user's client device to the online system itself for the user. If multiple users of the online system use the client device, the online system propagates settings of a primary user of the client device to the online system, but does not propagate settings of other users of the client device to the online system. The online system logs accesses to the online system each day from the client device of each user. A user having a maximum number of logged days accessing the system and accessing the online system for at least 50% of the logged days is determined to be the primary user by the online system. The online system may use determination that a user is a primary user of the client device for associating actions with the user, selecting content for the user, and identifying the user.