On a recent afternoon, security researcher Chris Paget was able to capture the passport card information of several unsuspecting individuals while driving through San Francisco, using a device he built in his spare time for a total of $250. A video released by Paget shows just how easy it is to clone RFID (Radio Frequency ID) tags with this relatively simple technology.

The tags he captured are part of a new generation of ID cards that come with embedded RFID microchips. These vulnerable IDs include PASScards, new mini-passports the size of a credit card which are designed for non-air travel between the US, Canada, Mexico and the Caribbean.