BlackBerry Limited
Method and device having secure removable modules

Abstract:

A method at an electronic device having at least one slot to receive a removable security module, the method including detecting coupling of the security module to the electronic device; sending a challenge to the security module; receiving a response from the security module; checking whether the response is valid at the electronic device; and providing a signal based on results of the checking, wherein only a defined number of security modules are configured to provide a valid response per slot or for each security module type at the electronic device. Further, a method for preventing functionality on an electronic device, the method including replacing a valid security module coupled to the electronic device with a dummy security module; detecting uncoupling of the dummy security module; and providing an alert.