The present disclosure teaches provision of a method and a portable electronic device. The method comprises receiving, via a wireless communication interface capable of supporting paired interaction, a data packet from an aerosol provision device via a wireless communication network. The data packet contains information relating to at least one physical characteristic of the aerosol provision device. An identity of the aerosol provision device is determined based at least in part on the at least one physical characteristic of the aerosol provision device and an aspect of a user interface is changed based on the determined identity of the aerosol provision device.