The present disclosure relates in one aspect to a mounting adapter configured for mounting an add-on device to an injection device, the mounting adapter including a carrier, a first mount connected to the carrier and configured to connect to a housing of the injection device, a second mount connected to the carrier and configured to connect to the add-on device, and an electrical conductor arranged in or on the carrier, wherein the electrical conductor is configured to exchange at least one type of electrical signals with the add-on device.
