Disclosed are audio accessory devices and systems for being connected to one or more user devices and related methods. The system comprises an audio accessory device having at least one speaker and being configured to connect to at least one user device for providing audio from the user device to the audio accessory device and a computer program application accessible from the at least one user device. A verification ID is provided external of the audio accessory device and comprises audio accessory device identification information identifying a specific audio accessory device. The system furthermore comprises a user interface facilitating interaction between a user of the audio accessory device and the user device, and allows for user facilitated entering of the verification ID. A verification server may be configured to receive the verification ID from the user device and to verify the user device for use with the computer program application, if the verification ID is valid.