"If you can read the chip, then you can clone it," he says. "You could use this to clone a passport that would exploit the system to illegally enter another country." (We did not clone any of our passport chips on the assumption that to do so would be illegal.)Link, Link to Bruce Sterling's blistering commentary (Thanks, Matt!)
Grunwald adds: "The problems could get worse when they put fingerprint biometrics on to the passports. There are established ways of making forged fingerprints. In the future, the authorities would like to have automated border controls, and such forged fingerprints [stuck on to fingers] would probably fool them."
But what about facial recognition systems (your biometric passport contains precise measurements of key points on your face and head)? "Yes," says Grunwald, "but they are not yet in operation at airports and the technology throws up between 20 and 25% false negatives or false positives. It isn't reliable."