Pressing any key prompts for Unlock Password

[Guest kaf]

The better the home screen gets the more I just want to read what it says every now and again.

Problem is when it's dimmed and I press a key - it doesnt show the home screen it asks for my lock password and I have to cancel to see the homescreen

Any way I can change it so I actually have to press unlock to unlock and any key just un-dims the display?