XSp.

Specially designed for touchscreen tables, SLAP (Silicone Illuminated Active Peripherals) widgets solve the need for tactile feedback on such devices:

Quite an interesting approach for user interfaces… I always thought the main problem with touchscreen tables and devices was the lack of a keyboard or something more “responsive” or physical to deal with it.
A more thorough explanation on how it works on the official Media Consulting Group SLAP project webpage.

Source: Gizmodo