On the MX Keys mini it is very easy to accidently switch devices because they are the keys right above 1-3. I find myself accidently switching devices during heated moments in games. I still heavily use the device switching feature, but it would be nice if you implemented a safety mode where the device key has to be double tapped or held for a second. I know this is possible because you can map the keys to a script to do this in linux with the solaar app. You can also script the mx master mouse to switch with easy-keys