Lock icon appears on screen - can't touch anything now

[codeBeast]

Hi. I have a lock icon at the top left of the screen. Now I can't touch anything. I don't know how to get out. Would appreciate any help of how to get out of this "locked mode"

 

[B. Diddy]

Welcome to Android Central! Which phone? Can you show us a screenshot? http://forums.androidcentral.com/ge...ide-how-post-screenshots-android-central.html (Use another device to take a picture of the screen.)