Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

Should I collect receipts after paying with a card?
Keeping a receipt does allow you to verify that the expected amount was charged/debited it also can help when you need to return an item.  Regarding double charging, the credit card companies look for that. If the same card is used at the same vendor for the same exact amount in a short period of time the credit card company will flag the transaction. They assume either a mistake was made, or fraud is being attempted. The most likely result is that the transaction is denied.  A dishonest vendor can write down the card number, expiration date and CVV number. Then after you leave make up a new transaction for any amount they want. You of course wouldn't have a paper receipt for this fraudulent transaction. The key is reviewing your transaction history every few days: looking for unexpected amounts, locations, or number of transactions.