I would consider buying on of these!
The idea is that you wear the camera as a pendant so that it's always close at hand. The camera has 2 shooting modes: 1) one mode allows you to hit the button to capture a single shot; and 2) one mode allows you to double-tap the button to snap a picture at a fixed interval. Images can then be transferred wirelessly to your phone. You can also pick an image to display in the viewfinder like a mini Polaroid around your neck. Leaving an image up apparently doesn't burn the battery as the display uses e-ink technology that only draws power when changing the image.
Alas, this camera pendant is only a concept...