A GERMAN hacking group claims it can bypass the fingerprint-based security system used to unlock Apple's new iPhone 5S.

A spokesman for the Chaos Computer Club says the group managed to fool the phone's biometric sensor into accepting a fingerprint created with a household printer and wood glue.

Dirk Engling said on Monday that the exploit has been documented with several videos so independent experts can verify it.

He added that the hardest part had been getting hold of an iPhone 5S, which went on sale in Germany last week.

Apple didn't respond to repeated requests for comment.