BarCamp/Badges

Here's an idea from Hack-a-Day's Business-Card Sized PCB

What about an RFID version of Mafia, everyone has a unique code and only one person can kill them. It has two displays and two buttons, one display is your number one display is the number of the person you have to kill. One button lights up the displays, the other button sends out a kill signal. If the wrong tag is read you die or if multiple tags are read you die…. kinda hard to explain and I have no idea how to actually do it but its worth throwing out there.

RFID makes it really expensive, but we could put two contact pads on each badge and have people push their badges together to see if they've 'killed' the other person. A Rock-Paper-Scissors game would work as well.

An electronic badge will be probably much more expensive, but it is doable depending on time and money factors. Currently there are two ideas on the table, one acrylic and one electronic. Each one will be documented here.