When this lady taps on the table, the spider in the jar does not move at allbr br Now, watch when she taps her iPhone and points the camera.br br See that? The spider starts running! But why?br br Here’s the secret, straight from an Apple patent br br iPhones have a LiDAR sensor that sends out light beams invisible to us but not to spiders! They can see it, which freaks them out and makes them move.