But it appears he, or maybe one of his colleagues has picked up the torch, though with the added benefit of germicidal properties, it might still suck to type on, but at least you can be 99% sure the keyboard is SARS free:
The latest version is great! The UV light is like a long-term feedback mechanism! As you type more and more your finger tips get UV exposure that slowly burns your skin. You could change the refractive index of various letters so that more less light escapes thus allowing H to burn your finger more than J!
Alternatively you could also get more SARS from J than H so I guess that is feedback too.