This is the AirSketcher, a robotic electric fan designed by Keita Watanabe.
Here’s what it does:
In the center of the fan is a camera that can read different patterns printed on cards. In order to keep the target person constantly cool as they move about the room, the fan aligns itself by scanning for patterns it recognizes. When there is no pattern to be seen, it is busy looking around, and thus cooling the room in a random way, but locks on once it finds what it’s looking for.
Imagine if you bought 100 of these and they all followed you around the room.