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Useless iPad lock screen is probably to save significant battery.

G

Gurtz

macrumors member
Original poster
Aug 11, 2009
69
0
Columbus, Ohio
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I'm not an expert but this makes sense to me.

So I was thinking and I realized why there is a lock screen on the iPad. When you press the sleep button, the display turns off, but since the device is on, the OS is still "displaying" the OS, you just can't see it. So the device goes into lock screen mode where it only has to worry about touch, time, and a few other things. If the OS was "displaying" the home screen or an app, it would have to worry about some 17 other tasks (all the springboard, launchd type stuff) or something like that, killing the battery while in sleep.
 
Well you still don't want to be randomly launching applications and things like that when you are carrying it. I think it's also basically a way to 'deactivate' the touch screen.
 
Locking VERY useful

It is most certainly NOT useless.

There's a lot of personal information on your iPad. Did you not notice that you don't have to give any additional password for LinkedIn or Facebook?

Or your mail?

Locking your iPad not only turns off your screen but (surprise!) LOCKS it so prying eyes and fingers. I have it set up to completely erase all data after 10 invalid PIN entries.
 
Strangely enough, I have a lock screen on my desktop system as well. They aren't only for keeping the device from accidentally turning on.
 
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