3. The method of claim 2 , wherein the wearable sensor is connected to the mobile device via a wireless body area network, and receiving, at the server computer of the remote computing system, the user identification information comprises receiving, at the server computer of the remote computing system, the user identification information via a wireless wide area network to which the mobile device is connected.
3. The method of claim 2 , wherein the wearable sensor is connected to the mobile device via a wireless body area network, and receiving, at the server computer of the remote computing system, the user identification information comprises receiving, at the server computer of the remote computing system, the user identification information via a wireless wide area network to which the mobile device is connected. 5. The method of claim 3 , wherein the mobile device comprises a cellular receiver configured to facilitate connection to the wireless wide area network.