The biggest problem with putting it in the back pocket is that it can cause you to have really bad posture down the line (like my friend's dad who sits unevenly because of having his wallet in his back pocket all his life).
I keep mine in my bag when I wear jeans, leg pocket when I wear cargo pants (I'm so short that no one could reach down there anyway lol), or coat pocket if I have a coat.
if I carry my wallet, I carry it in my front pocket of my jeans or the side if they're cargo pants. Otherwise I usually carry straight cash since I don't have a credit card, or the such, yet. (I lost $20 at the movies last Friday so I think I may carry a wallet more often now tho. lol)
When I'm wearing my Scottevest hoodie (It has 13 pockets) I wear it in my.. belly pocket of what ever you want to call it. I only do it with that hoodie cause it has pretty strong magnets preventing it to fall out.
the leg pocket by the knee when I use those cargo pants or on the side pocket when I'm using common pants... my wallet is small and my pants are too large that almost 2 of me could fit in, but it would never fall when I sit
carrying it on hands or bag is "dangerous", someone can just take it easily, at least here, where is easy to find some outlaw guys and the cops don't walk on streets by foot, only by car (somewhat rare to see cops on the streets, even by car) x.x
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