nope PIN is for only SIM card only , you need to type lock code that's different

when the device is security locked, the only thing showing up is the numerical touch keyboard. so you cannot see anything

including basic time/date etc. Unlike symbian where you can, it would be great to have more information shown.

You CAN see Date and Time you just have to lock the screen and then press the power key once.
Try it! 1. Lock Device 2. Lock Screen 3. press power button once.

I meant PIN in the generic sense, i.e. any numeric password-type thing, but you're right to make the distinction.

Actually it works for me. I wasn't doing the right way.
Thanks.

It's because of your theme. change your theme (for example default theme), time will appear.
I've same problem when I changed theme.

I got a lost phone back because it showed my name and phone number on the power-up screen. Perhaps you should move somewhere friendlier?

I have also got a phone back...but I actually think the best thing would be the P-Touch for this sort of thing.

This past weekend I found a BlackBerry Bold some one had left on a bench at a local park. The lock screen had a message in the way of "If found, please call so-and-so at such-and-such number" so I called the owner and was able to return the phone. Needless to say, he was very happy.