STUDIO CITY (CBSLA.com) — Millions of security systems, smartphones and tablets use a fingerprint instead of a password for security.

It’s supposed to be uncrackable, but it now appears fingerprint technology is easily hackable.

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Photos – with clear views of hands and fingers – can now be used to re-create a fingerprint.

Jan Krissler, know to hackers as “Starbug,” did just that.

He says pictures of German Defense Minister Ursula Gertrud von der Leyen were taken with a standard camera from about 10 feet away; and he was then able to zero-in on her fingerprints and reproduce them using readily-available software.

“The whole security of the system relies on keeping something secret that isn’t secret,” he says.

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Krissler has been exposing what he calls flaws in biometric security for years.

Days after the finger-scanning iPhone 5S was released, he successfully unlocked a phone by re-creating a “dummy finger” using glue to make a mold from a photocopied fingerprint.

Krissler says fingerprints are even less secure than standard passwords because once they’re stolen, they can’t be changed.

“This would be a very targeted thing,” security expert Kevin Mandia says. “You have somebody, their photos are publicly available, they’re an important person and the rewards outweigh the risks.”

There are other options. A company called ViewSonic is reportedly working on a new smartphone which scans users’ eyes to gain access.

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Until then, experts say it’s best to stick with the old-fashioned password, or to use it in addition to fingerprint technology.