Researchers at the Institute of Advanced Media Arts and Sciences in Japan, have developed a tiny camera that takes photos using your hands as a frame for the photo, and the device is called the Ubi-Camera.
The video below shows the Ubi-Camera in action, and this tiny camera features a range sensor, and the framing of the photo is determined on the distance between the camera and the person shooting the photos face.
“When you draw a picture or take a photo, you sometimes form a rectangle with your hands to decide the composition. With this camera, you can take a photo using the exact same motion. You attach this device to your index finger, and form a rectangle with your finger like this. You take the photo by using the rectangle as the viewfinder, like this. When you push hard with your thumb, the shutter is pressed.”
You can find out more information about the Ubi-Camera over at DigInfoTV.