If you signed your passport incorrectly or there is a mistake in your signature, you may leave it if it is not too bad. If you think you need to change it, simply strike a single line through the mistake and sign the correct signature. If this is not good enough, you may need to apply for a replacement passport.
Only works on rooted devices (or devices with Recovery Mode) Disable ADB on screen off and enable ADB *after* screenlock is unlocked. Source code (+artwork) freely ($0) available on demand by email. Adb-Lock helps protecting Android (prior to 4.4.3) against the adbd authorisation bypass attack by (found by Henry Hoggard, MWR Labs).
Use a Screen Unlock Password. 1  From the Screen lock settings menu, tap Password. 2  Enter a password, tap Continue, and then enter your password again to confirm it.3  The screen lock is set. 4  If you fail to enter the correct password after five attempts, you will be prompted to wait for 30 seconds before you can try again. The screen unlock pattern is saved. 2  Enter a backup PIN, tap Continue, re-enter the PIN, and tap OK to save your screen unlock pattern. 3  The screen lock is set.