The bootloader is basically a small hex file that runs when you turn on the Arduino board. At first looks around to see if the computer (at the serial port) is trying to program it. If so, it absorbs ...

An Arduino, a spent roll of toilet paper, magnet wire, and a few passive components are what’s needed to build this RFID spoofer. It’s quick, dirty, and best of all, simple. However, [S… ...