It's so useful, but you need to change your idea of wallets. I used to have a fat wallet with all sorts of cards etc. But it's so much better when you get used to only taking care of the bare essentials. ID is easy to see when you need to show it. I'm at least 18, but the cashier insists. RFI protection is a plus. The upside is that the back pocket is no longer the only place for your wallet when more secure pockets are available. I am currently using the shirt pocket.
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