Qiui is a Chinese company that manufactures Internet-connected sex toys. Its most famous product is the Cellmate remote-controlled chastity cage, which is Bluetooth-controlled and communicates with the Internet via a cellphone app. When locked, the cage is held closed by a locking pin.
How do you use a cock lock?
First you hold the part that resembles a cock ring up against your scrotum and pull the fabric of your scrotum skin through. With some gentle nudging your testicles should slide right through the ring. Then you carefully push your penis through the opening of the ring and pull it gently out the other side.