At the door of your friends apartment, you finally find their name in their ancient access entry system. After what seems like an endless wait, you finally call them on your mobile device to get their attention and are buzzed to enter. Turns out your friends has already started the party and didn't hear the ding-dong...

Access entry systems are due for a disruption. What if you could just use your mobile to enter?

We piggyback on hardware like the Sesame internet-enabled deadbolt attachment, which recently raised more than one million dollars on Kickstarter.

How it works

Our system let a visitor send an SMS or call a given number to open the door. Hosts can provide friends with time-limited phone numbers functioning as entrance keys to their place, saving them from having to confirm and manually buzz in their visitors.


The phone numbers are registered with Sinch, which responds to an SMS or call by triggering a URL to our web service. We run an REST based server on Heroku that responds to requests from Sinch by passing a message to our PubNub channel.

We built a prototype of an internet enabled deadbolt using a Tessel microcontroller, which responds to messages from PubNub by spinning a servo.

Share this project: