Often my husband and I go out to eat at a nice restaurant where our check is brought to us at the end of a meal in one of those black folders. If we pay with our card we'll set that out and wait for the server to bring us back a receipt to sign. If we pay with cash often we will just leave the cash along with the receipt inside of the folder and leave since there isn't really much sense in waiting until they collect their payment. The servers always see us leave, then realize they need to go process the payment. So, what stops people from just leaving with out paying? Besides morality and honesty, are there any precautions in place that prevent people from walking out?
Also, are there any precautions in place that stop servers from taking down information from the cards they handle to exploit later?
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