We decided to pick up a Zeno Acne Treatment system from eBay recently, due to very good sounding reviews. The device has a tip which heats up to a designated temperature, and you are to hold it to a trouble spot on your face for a few minutes while it counts down. This is all great, but the tips are meant to run out after 45 to 120 uses depending on the tip. Before we ran it completely I took did some searching around on the web, and supposedly there is a EEPROM inside. I carefully disassembled the tip and discovered a 24C01A EEPROM was in fact in there!