To facilitate recovering lost or stolen mobile devices, methods and systems are provided that enable mobile devices to report information that can be used to locate the device and/or identify an unauthorized user. Owners can report the loss or theft of their mobile devices to a server which can transmit an anti-theft activation message. Reception of the anti-theft activation message prompts activation of a anti-theft software module may limit access to programs and data on the mobile device while allowing the normal use of the mobile device through a secondary user interface. Unbeknownst to unauthorized users, data related to the user and the device are collected and transmitted to a server. Collected data may include user biometric data and non-biometric data. User biometric data may be matched against biometric databases to identify the user. Non-biometric data may be used to help locate the mobile devices.