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Fingerprint scanners on smart phones have become the preferred way to unlock these devices for millions of people. The technology has become extremely reliable in recent years. [Scroll Down for Video]

However, this has also opened up a new set of security concerns. Case in point, a research team at Michigan State has found that simply printing a digitized fingerprint is good enough to unlock many current smart phones.

Of course, this means someone would need a digitized copy of your fingerprint, but methods for extracting usable fingerprints from everyday objects are plentiful and fairly well known.

Some researchers have even been able to recreate a digitized fingerprint just from high resolution photographs.

It seems that even in the modern age of bio recognition the best safeguard for your privacy is still a long, random password.