Imagine all the theft-stopping power of car alarms, only crammed into your pocket. Of course, the No Touch Alarm Card also comes with everything you hate about car alarms: set to sound off when ...

The alarm system was built using a matrix keypad that interfaces with an ATMega88 micro controller. The micro controller handles all the logic for the system, triggering an attached “pocket ...

I had the idea to make some kind of alarm that would go off if anyone but me removed the wallet from my pocket. A quick google search revealed tons of wallet alarms, but I noticed that they all ...