Why a smart contact lens is the ultimate wearable

Smart contact lenses sound like science fiction. But there's already a race to develop technology for the contact lenses of the future — ones that will give you super-human vision and will offer heads-up displays, video cameras, medical sensors and much more. In fact, these products are already being developed.
Sounds unreal, right? But it turns out that eyeballs are the perfect place to put technology.
Smart contact lenses are like implants but they don't require surgery and can usually