Hacker News Reader

Just put the chip in the microwave for a few seconds. It won't do any noticeable damage, and it will destroy the RFID.

Then you get either marked for absenteeism, or hit with criminal penalties for "tampering with school property."

Actually that leads to visible marks on the RFID.

Much easier to hold the card up to the light and find the chip, then snap the traces by bending it. I did this at summer camp to great effect. I had to get a new card so I could get into the building.

I renewed my passport about a year early as the chips were going into the new versions, though I hear a little percussive maintenance solves the problem when it arises again.

Reply on news.ycombinator.com