The prototype will be built with a Digispark USB Development Board - Digistump based on an Attiny85 and a 433Mhz RF module.
What will happen, when you have not noticed that he has pulled off his clothes? You have to clean the whole room.
We have already installed a security cam, but in night mode, it's difficult to see, if he is still dressed. I think this little device will make our life again a little bit easier.