Remembering password based on digits is relatively easy because you can associate the digits pattern with something. You can use combination of digit patterns associated with multiple things such as your car numbers plus your mobile number plus your name plus any of your favorite digit – as your password for your mobile device. Next time you recall the things that you associated with the password and in most cases you are able to recall it. Lock pattern is another way that is used excessively to password protect devices in which you have to tap the device screen and move finger in a pattern to unlock device. Of course you have to set this pattern from security options. All the Android based devices offer this security option to use lock pattern to secure device from unauthorized access. Its quick way to unlock the device but in my opinion it can be forgotten easily.