A method for pervasive resource identification includes receiving an authentication request from a first application service. The authentication request requests authentication of a user of a user device. The method includes obtaining device information associated with the user device of the user and generating a unique opaque identifier for the user device based on the device information. The method includes obtaining authentication credentials from the user device. The authentication credentials verify an identity of the user. In response to receiving the authentication credentials from the user device, the method includes generating an authentication token and encoding the unique opaque identifier into the authentication token. The method also includes transmitting the authentication token to the first application service. The authentication token, when received by the first application service, allows the first application service to adjust an interaction with the user device based on the unique opaque identifier.