I want one of these
 

http://www.dailymail.co.uk/sciencete...whos-door.html

What a great idea.

I bet they sell millions of these.

ADT and GHS are a few security companies that do the same thing. Too bad they charge out the ass for their services. They use alarm.com which has an app where you can access cameras and view access logs. Pretty neat stuff if you're into security. I like this idea but damn is it expensive.

Youll def know if the person ringing the bell has fugly finger nails or not

I just have an ip camera pointed at the front door and I can pick up my cell phone and check to see who is knocking. The problem with this device is probably half the people out there just knock instead of pressing the doorbell. Had a dirty Jehovah's witness do that to me last saturday morning.