1. A method for transmitting contact information to a requestor, the method comprising: receiving, by one or more processors, from a requestor an image of a user, wherein the requestor and the user are different users; identifying, by the one or more processors, the user in the image; determining, by the one or more processors, a time associated with the image of the user; retrieving, by the one or more processors, a permission rule associated with the identified user, the permission rule indicating a predetermined threshold of proximity between a location of the user and a location of the requester around the time associated with the image; determining, by the one or more processors, whether the permission rule is satisfied; and responsive to satisfying the permission rule, transmitting, by the one or more processors, the contact information of the user to the requestor.