...which would also be illegal.
Some states this would be illegal, like California. It is basically a lost item. A business transaction would have knowledge of what was in the pockets and would be included in the transaction.
485. One who finds lost property under circumstances which give him
knowledge of or means of inquiry as to the true owner, and who
appropriates such property to his own use, or to the use of another
person not entitled thereto, without first making reasonable and just
efforts to find the owner and to restore the property to him, is
guilty of theft.