A wearable computing device, such as a wearable credit card type device or a wearable identification type device, that provides for location based authentication to verify that a user currently in possession of the wearable computing device is indeed the authorized user. In this aspect, the wearable computing device may detect wireless network signals in range of the wearable computing device, and transmit authentication data and the detected wireless network signals to an authentication service. The wearable computing device may then be authenticated when the authentication data corresponds to the user and the detected wireless network signals correspond to a pre-authorized location for authentication.