An Android widget that prevents the lock screen from appearing when the screen turns on.

Get from Google Play: https://play.google.com/store/apps/details?id=com.futonredemption.nokeyguard

This application works for phones and tablets.

Android 3.x and lower only, Android 4.0 has this feature built in

NOTE: This widget does not work if you have an Exchange account that forces you to have a pin/password to access your phone.