Chui Doorbell

For home-gadget lovers, this has got to be one of the coolest gizmos we’ve seen. Chui is the world’s smartest doorbell. With an in-built camera, it allows you to record your friends and family and then, using facial recognition, you can set the door to allow access to those it recognises. That’s not all. It connects to your smart phone and allows you to talk to your visitor via the bell, record messages for specific people (eg “I’m in the shower let yourself in”), and it even helps you to ignore pesky guests by not even ringing when they turn up on your doorstep.