Not only does the scanner exsist that will scan your wallet for card info,there is also one that will lift the info off of your vehicle keys when you use it(thanks to chips).From up to 30 feet away,the last that I knew.This is the reason that I have`nt had a credit for almost 50 years and will not have a debit card either.And those guard wallets work pretty good UNTIL you take your card out to pay for a purchase.Then if there is a scanner around they got ya.
Good luck.Have fun.Be safe.
Leo