Systems and methods are disclosed which may allow a user having a mobile device to automatically authenticate to a server using a device identifier associated with the mobile device. An access point may be configured to send the device identifier as well as additional identifying information to the server so that the device identifier can be accurately matched to the mobile device. Then, when the mobile device submits a credential during authentication, the device identifier and the credential may be matched such that the next time the server receives the device identifier from the access point, the mobile device may be automatically authenticated.