I've heard some pretty horrid stories about this, I hope you are meeting in a very public place just to be safe. You can put a pass code lock on it Settings - General - pass code lock. Once the money has changed hands and you are satisfied it's all there, don't forget to tell them the pass code though. Also be aware of others watching the transaction take place, be aware of this when you leave your meeting place. I assume you've erased all personal information off the iPad already. Have you upgraded to IOS5? If you have it would have included a feature, Find my IPad. Settings - ICloud - find my iPad Make sure it's turned on. If you haven't you can just download the app Find my IPhone. Have a good read of the app and what it can do for you and make sure it is enabled. Now that we've scared you half to death that's all I've got other than taking a friend with you. Good luck!!