How dangerous would it be to use a phone or tablet in the bath whilst it is connected to a mains-powered USB charger?
Obviously it could be dangerous to the device itself if you drop it into the water!
Obviously a 5 volt low current supply isn't usually life threatening.
Obviously we have rules about sockets in bathrooms. But a long USB cable to a socket in another room seems a likely way round that.
But if something is wrong somewhere, such as a mis-wired USB charger, could there be any appreciable danger?
Is there in future likely to be a bathroom-safe USB socket next to the shaver and toothbrush socket?