Holes imaging / Keyhole

So, how do we do not want to approach this a little trouble to solve it? At the same time, you can also find keys to become more lively and interesting.This approach is very simple thought, the use of keys on the holes, according to your house, car, office and other different scenes while the pair into a corresponding geometric shape, with weak when used as long as the ambient light through the hole, so you can clear Identify the key you are looking for.