Oily Fingers Could Give Away Your Smartphone Password

Your greasy fingers could be doing more than smudging your touchscreen: you could be tracing the path to your smartphone's password, security researchers report.

"Touchscreens are touched, so oily residues, or smudges, remain on the screen as a side effect," the report said. "Latent smudges may be usable to infer recently and frequently touched areas of the screen - a form of information leakage."

The researchers tested Android handsets because the Google OS uses a graphical password, with users tracing a pattern on the phone to unlock the device. In ideal lighting conditions, the researchers managed to decipher the phone's password 92% of the time by taking photos of the screen and bumping up the contrast.

Read the full story at PC Pro.

Presented by

How to Cook Spaghetti Squash (and Why)

Cooking for yourself is one of the surest ways to eat well. Bestselling author Mark Bittman teaches James Hamblin the recipe that everyone is Googling.

Join the Discussion

After you comment, click Post. If you’re not already logged in you will be asked to log in or register.

blog comments powered by Disqus

Video

How to Cook Spaghetti Squash (and Why)

Cooking for yourself is one of the surest ways to eat well.

Video

Before Tinder, a Tree

Looking for your soulmate? Write a letter to the "Bridegroom's Oak" in Germany.

Video

The Health Benefits of Going Outside

People spend too much time indoors. One solution: ecotherapy.

Video

Where High Tech Meets the 1950s

Why did Green Bank, West Virginia, ban wireless signals? For science.

Video

Yes, Quidditch Is Real

How J.K. Rowling's magical sport spread from Hogwarts to college campuses

Video

Would You Live in a Treehouse?

A treehouse can be an ideal office space, vacation rental, and way of reconnecting with your youth.

More in Technology

Just In