Danielle Morrill of Twilio shared something very similar to this on her blog back in June of 2010. One difference in her post is the fact that she set up differ

Danielle Morrill of Twilio shared something very similar to this on her blog back in June of 2010. One difference in her post is the fact that she set up different secret codes for various roommates. Link: http://www.daniellemorrill.com/2010/06/how-i-built-a-multi-user-door-buzzer-for-our-apartment/ http://www.daniellemorrill.com/2010/06/how-i-built-a-multi-u...