Thank you everyone for your feedback.
The product would be a small electrical piece, probably made of metal and plastic, and most probably not computerised. I don’t know if it could be 3D printed, since it’s electrical.
As for the sector, it would be an addition to a lot of home and office objects so it’s definitely one of the fastest growing industries out there.
My main issue right now is that I can’t help thinking why this hasn’t been invented already, which makes me wonder if it can be at all.