Punny Money has a way to help you catch tip fraud without having to compare your receipts to your statements (you do need to save your receipts, though). You use a checksum method. Adjust the pennies in your tip so the last digit to the right of the decimal point equals the sum of the digits to the left of the decimal point of the total bill.

When you get your statement, the fraudulent tips are easy to spot:

Link *(Via Crypto-Gram)*
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Punny Money has a way to help you catch tip fraud without having to compare your receipts to your statements (you do need to save your receipts, though). You use a checksum method. Adjust the pennies in your tip so the last digit to the right of the decimal point equals the sum of the digits to the left of the decimal point of the total bill.

When you get your statement, the fraudulent tips are easy to spot:

Link *(Via Crypto-Gram)*
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