Techniques are described that enable a user to create a secondary user account on a social networking system that shares a unique identifier with a primary user account. In some cases, a social networking system receives a first request to create a first user account, where the first request comprises a unique identifier such as a phone number or email address associated with a user. The social networking system creates the first user account associated with the unique identifier. The social networking system then receives a second request to create a second user account, where the second request also comprises the unique identifier associated with the user. The social networking system creates the second user account associated with the unique identifier.