Richard Stallman, founder of the Free Software Foundation (back in the 1980s) and Bruce Perens went to Tunis for the World Summit on the Information Society (WSIS), and -- like all the delegates -- were given passes with RFID chips. Perens writes:
You can't give Richard a visible RFID strip without expecting him to protest. Richard acquired an entire roll of aluminum foil and wore his foil-shielded pass prominently. He willingly unwrapped it to go through any of the visible check-points, he simply objected to the potential that people might be reading the RFID without his knowledge and tracking him around the grounds. This, again, is a legitimate gripe, handled with Richard's usual highly-visible, guile-less and absolutely un-subtle style of non-violent protest.
So far, so good. However, it seems that after his talk, "UN Security would not allow Richard to leave the room". Since he was there representing the UN and carrying a UN Development Program ID, this could be considered a bit of an own goal by UN Security officers....