When you press a key on these models, its underside squishes through a layer of rubber that touches a circuit board.

WSJ: Keys That Really Click

The Biometrics assure the iWatch wearer is the authenticated user and provides an additional layer of authentication, which could be very important across the board from enterprise to personal security.

FORBES: Apple's Rumored iWatch And Why It Matters

One favoured solution involves yet another layer of technology that would allow the driver to control on-board systems using spoken commands.

ECONOMIST: When crashing is not an option

Esa believes double layer drives could be as small and economical as the one on board Smart 1, but much more powerful, which would enable craft to accelerate and decelerate faster.

BBC: Glow from argon plasma. Image: LPTP, Ecole Polytechnique