Wireless communications systems and methods

Embodiments of the invention provide proceed, devices, and Computerpogramme that (D2D) communication services for controlling the provision of device-to-device are arranged in a communication network. One embodiment includes a device having a processing system, which is arranged to cause the apparatus to: associate a credential of a first type of the first D2D device; storing an association between a validity condition and the credential of the first type, wherein the validity condition depends on a characteristic of the D2D communication service; Data indicative of the credential of the first type to transmit for receipt by the first D2D device, wherein the credential for use in the verification of the D2D communication service is defined by the first D2D device a second, different, D2D device is to provide and maintain an operating condition for the D2D communication service depending on the assignment.