I use one of those half-wallets with the id window or my back pocket. If I carry a purse, it becomes a garbage bag full of receipts, cigarette butts, candy wrappers, outdated paperwork/bills and other assorted junk that drives me crazy. I do have a purse that I use when I need to take my iPad with me, but nothing but a notepad, pen, and a tin of Carmex are allowed in it. Nothing is worse than getting little bits of tobacco stuck inside your Carmex lid. Yuck. Well, I guess there is something worse: when a friend asks to use your Carmex and sees all the nasty little bits of tobacco stuck in the lid.