You can certify, and use the Bluetooth mark, based on assertion and documentation. Bluetooth SIG is also not very good about going after companies misusing the

You can certify, and use the Bluetooth mark, based on assertion and documentation. Bluetooth SIG is also not very good about going after companies misusing the mark. This is why you can buy a million brands of $10 OBD-II dongles from Amazon that all show up with the exact same device ID - and they have the Bluetooth mark molded right into the plastic. It's actually the same issue with low-end mice and keyboards on USB [0]. [0] https://blogs.msdn.microsoft.com/oldnewthing/20041110-00/?p=37343 https://blogs.msdn.microsoft.com/oldnewthing/20041110-00/?p=...