Ugh. I was blown away the first time I saw my HR lady whip her phone out of her bra. WTF?  Granted, this chick in the picture looks ridiculous, but a bra is storage for boobs. Period.  Ever notice that only fat women do this? I don't have enough padding on my body, even if I was interested in trying it. Yuck and yuck.  Like you said, storing your wallet in your underpants would be highly objected to, as should this. Carry a friggin small backpack. You're still hands free.