Many think this is true (even I did) but it's not. You have to certify the product anyway, even if you use an off-the-shelf module. The only difference is that

Many think this is true (even I did) but it's not. You have to certify the product anyway, even if you use an off-the-shelf module. The only difference is that you can "certify with test" and "certify without test" (and price changes, starting from 5K a pop). Even evaluation boards and for prototyping, so I guess a end-user keyboard has to be certified[1]. [1] https://softwareengineering.stackexchange.com/questions/135285/when-does-it-become-mandatory-to-sign-up-with-the-bluetooth-special-interest-gro https://softwareengineering.stackexchange.com/questions/1352...