Keyboards with no physical feedback are a singular offense against nature: it's one of those design canards that never goes away. Kong Fanwen's No-Key Keyboard is the latest, but it does have one bonus: beauty!
How might these things be made to work? The keys could have some kind of electrical response, perhaps ... but it couldn't then go in the au naturel dishwasher for the ad, could it?
Lights, Camera, Glass…Action! [Yanko]