by Eric plummer
The smart doorbell is a device that is installed outside your door that allows the owner to answer the door using their smartphone.
It also allows the person at the door to view the owner and communicate with them.
The person at the door can leave message voice, video or text. Advertisers can also advertise on the unit.
There are home and commercial units. The commercial unit is much bigger than the home unit and can be used in apartments, office building, parking lots, banks and other type of business.
This device is currently in the final patent stages.
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