Scott Daigle, a graduate engineering student at the University of Illinois, looked at the wheelchair, then at the bicycle, and then back at the wheelchair and asked “Why not a gear system on a wheelchair?” Then he built one.
Now, if this door makes the classic Pphssshshm Star Trek door noise when it opens and shuts, the manufacturers are onto a winner. It sounds like a neat solution for dogs and cats that like to roam: you pop a weatherproof RFID tag in their collar, and when they approach…