Hot on the heels of this year’s never-released Optimus Maximus superkeyboard, Optimus has taken the concept one step further with the Tactus keyboard. The idea is similar, but instead of customizable keycaps, the keys themselves are virtual.

Cool idea, but as anyone who’s tried to play Mario on an iPhone can attest, there’s a definite advantage to the tactile feedback real buttons (or, indeed, keys) give a user.

Optimus Tactus concept keyboard [Slippery Brick]