1. Check out our app, Forums for Android! Download and leave feedback here!

General Potential security issue with the pattern unlock

Discussion in 'Android Devices' started by blackeyedbrian, Oct 21, 2008.

  1. blackeyedbrian

    Thread Starter
    15

    Oct 15, 2008
    11
    0
    15
    Most people will probably never notice this or never care, but here's what I noticed.

    If you unlock the screen and make a call, and don't use the touchscreen much at all, someone can pick up the phone and look at the smudges on the screen and see your unlock pattern. I tried this with my daughters phone earlier and was able to unlock it without previously knowing her code.


    I guess the tip is to wipe the screen off before you leave it unattended.
     

    Advertisement

  2. johnkzin

    johnkzin Well-Known Member
    56

    Sep 28, 2008
    223
    3
    56
    Or use a pattern that overlaps itself (using the same vertex more than once) so that they can't tell what direction you went...

    For example, if you just make a non-overlapping line, though, there's only 2 possible starting places and each one determines the direction of travel. So, if you can see the squiggle, you can break in with only 2 tries.

    But, if you use a full circle, there's 8 possible starting places, and two possible directions of travel. That requires 16 tries.

    There's room for a LOT more complexity from there.

    But, yes, it's also a good idea to wipe off your screen :)
     
  3. sleebus.jones

    sleebus.jones Well-Known Member
    35

    Sep 27, 2008
    240
    0
    35
    Houston, TX
    The ultimate security system is to keep it on your person. :)
     
  4. coyote121403

    coyote121403 Member
    15

    Oct 17, 2008
    13
    0
    15
  5. RobPuba

    RobPuba Member
    15

    Oct 2, 2008
    20
    0
    15
    Brooklyn, New York
    I second that :D
     
  6. punkzanyj

    punkzanyj Well-Known Member
    128

    Oct 20, 2008
    1,012
    72
    128
    or you make a pattern that's more complicated than 4 dots. I don't think there's a limit
     
Tags:

Share This Page

Loading...