Hello, at the last tests, anyone can give voice commands. I opted for the tape over the mouth when the children were very imaginative (my name is "poo", make the cockatoo noise, wake me up at 3 in the morning... and so on). But now that they're teenagers, their concerns are elsewhere and the system works well ;-). In the end, it's all about living well together :-D

I haven't tried that. First of all, "everyone" has to come up with the idea of saying "ok Google". However, there are quite a few visitors who like to try this out. Then it is again an advantage that Google recognises almost every voice as legitimate.