How To Open A Faucet How To Create An Faucet Opener/closer Without A Person To Control It?

How to create an faucet opener/closer without a person to control it? - how to open a faucet

Water, then stops ... I know it's complicated, but I'm really interested to know how to do it automatically, but how to open and close without a person that controls, but with the power ... Just the sensors or other things that I need only lock the device and open the water passage to ignore ... I think electromagnets hm ... Are there really ways to make it easier?