What do you do if a violent suspect or terrorist runs around the corner or into a building? You might stick your head around the corner, or into the building, but that could be dangerous. You could call in a UAV surveillance drone, but this could take time. Or you could launch teargas or a grenade in the approximate direction of the suspect, but this could be dangerous not only for the suspect, but for innocent parties.
One solution is something called a ‘photo bomb’ from Bounce Imaging in Boston. This is essentially a small bouncy ball dotted six with digital cameras. All a user need do is press a button and throw it. Images are taken every 1/2 second and are relayed back to suitable portable device. Flash is available via near-infrared lights that are invisible to the eye.
Presumably also rather useful for paparazzi and teenage parties.