Sony patents contact lens that records what you see; CNet, 5/2/16

Michelle Starr, CNet; Sony patents contact lens that records what you see:

"A new patent, awarded to the company in April, describes a contact lens that can be controlled by the user's deliberate blinks, recording video on request.

Sensors embedded in the lens are able to detect the difference between voluntary and involuntary blinks. The image capture and storage technology would all be embedded in the lens around the iris, and piezoelectric sensors would convert the movements of the eye into energy to power the lens.

Of course, at this point, this technology isn't small enough to be comfortably embedded in a contact lens, so it's only theoretical."