US Patent 9516018 Credential technology

In one implementation, a server system receives, from a device of a user, a request to validate a credential of a second user. The server system identifies the credential of the second user to validate based on the request received from the device of the first user. The server system confirms that the credential of the second user corresponds to a credential issued to the second user by a credential issuing organization. The server system accesses the credential information for the credential of the second user and validates the credential of the second user to the first user.