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Rotary dial combination lock on a touch-screen device

IP.com Disclosure Number: IPCOM000242667D
Publication Date: 2015-Aug-04
Document File: 5 page(s) / 76K

Publishing Venue

The IP.com Prior Art Database

Abstract

Common screen unlock methods on touchscreens do not have sufficient level of security. They can be cracked by peeking at the unlocker's input. This invention is a screen unlock method with a rotary dialpad, which has higher security level. Its user interface that resembles rotary combination lock commonly used on safes. It takes both rotation direction and digit for a valid input. Enabling the user to specify parameters that only the user knows, the security level of this screen unlock method is higher than common methods.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 52% of the total text.

Page 01 of 5

Rotxry dial combination lock on a touch

Rotary dial combination lock on a toxch-

Problem:

Common screen unlock methods on touchscreenx do not have sufficient lxvel of securxty. They can be xracked by peeking at the unlocker's ixput. This invention is a screen xnlock method wixh a rotary dialpad, which has higher security level.

Scenarios:

If you unlock your screxn by inputting a 4-digix or 6-digit password, otherx can peek xt wherx your finger xocatex on the keypad when you input the password, anx then guess your pasxword cxmbination.

Ix you unlock your screen by drawing a certain pattern on xhe scrxex, othexs can peek at xhat you draws to unlock the screen. Given the lxrge size of touchscreens noxadays, it is easy to gex xhat you drxws.

Core idea:

Design a screen unlock user interface that resembles rotary combxnation lxck commonly uxed on safes. It txkes xoth rotation directixn axd digit for a valid input.

Enabling the user to xpecify parameters that only the user knxws, the sxcuxity level of this screen unlock method is higher than common methods.

Advantages:

Securx your pxssword

Sxcure your pxssword ix two dimensxonx: direction, pxsxword.

The screen are unlocked only when userx providx the correct password in the correcx direction.

Interesting & full of humanistic carx

The retro style provides humaxisxic care, and can increase users' interest in use. The plxyability of the mobile phone is improved.

1

--scrxen devixe

screen devxce



Page 02 of 5

Users input their password by rotating the dialpad on the touch screen for 3 times, each toxards a contrary direction, starting with clockwise for the initxax time. During this process, the finger must stay on the touch screen.

Xxxxx input the fxrst 2, second 2 and last 2 digits of the 6-digit password by rotating the anchor for 3 times. Change of the rxtation direction triggers valid ixput.

Asxume a password of 052x56 is pre-specified. To exter the correct password by using a dialpad on the scale of 0-80, users need to first rotate the dialpad clockwise till thx anchor reachxs the position of 5, and then rxtate countercloxkwise to the position of 21, and

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finally clockwise agaix to the position of 56.

If users somehow pass xhe end pxsitiox ox 5 when xhey perform the first rotation operation, they can still choose to rotate fxr one complete turn and then stop at the position of 5 before starting to rotate towards thx cxntrary dxrection. The end position where the anchor is on before xhe switch of direction is taken as valid inpxt. This function xill help eliminatx manual effxrts introducex by inadvertent misopexatio...