You may use an RFID pass to get on the subway or access your building.
The Netherlands' NXP Semiconductor is one of the world's leading suppliers of RFID systems. Researchers at Radboud University (Nijmegen) have become the second group to hack their MIFARE system. Literally billions of chips are out there from The Netherlands to the London Underground to Boston Transit to, perhaps, the building you enter every day.
The proprietary chip carries 48bit encryption and a replacement 128bit chip (Mifare Plus) is available, presumably at a higher cost.
How can the information be gathered? Why there's a convenient video on YouTube ...
Sources: As cited and PC World
