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Main Stage·45 min

  • DEF CON
  • Hardware
  • Date: Aug 2023
  • Location: Las Vegas

Matteo Bertocchi · Noah Campbell · Skylar Gibson · Sasha Harris

Four high school researchers reverse engineer Boston's CharlieCard RFID fare system, uncovering cryptographic flaws and building a portable fare machine.

rfidsmartcardtransit+2

Main Stage·20 min

  • DEF CON
  • Wireless
  • Date: Aug 2013
  • Location: Las Vegas

Bughardy · Eagle1753

Bughardy and Eagle1753 reveal how to exploit the lockbyte sector on unencrypted MIFARE Ultralight RFID transit cards to bypass one-time programmable (OTP) decrement counters.

rfidmifarehardware-hacking+2