If you are a big fan of secret knocks then you will love this clever little invention. With this device you can gain entry to a door if you know the secret knock combination that tells it to open. Techy details can be found here.
have you seen this New York, NY, United States
I come across things day to day, time to time, that hopefully you will stumble upon and enjoy. Please feel free to send me interesting / fabulous / amazing things you come across. If you see something you like, please stumble / reddit / digg it so others can find it and enjoy it too. ♥