Are squiggly lines the future of password security?

As more people use smart phones and tablets to store personal information and perform financial transactions, the need for robust password security is more critical than ever. A new study shows that free-form gestures -- sweeping fingers in shapes across the screen -- can be used to unlock phones and grant access to apps. These gestures are less likely to be observed and reproduced by 'shoulder surfers' who spy on users to gain unauthorized access.

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