imaluckyduckie

imaluckyduckie t1_j07b8t1 wrote

Best way to do it would be to build in a checksum. Every digit in the final amount after tip should add up to a number only known to you. We'll use 25 as an example. If you get a $80 bill, with a 20% tip, you'd be at $96. 9+6 = 15, so you can round up $0.19 so that your total is $96.19. 9+6+1+9 = 25, your secret checksum.

What if you don't want to tip an extra few cents every time? well you could also round down $0.08 to 95.92 in our example. 9+5+9+2 = 25.

Problem solved (and needlessly over-complicated)

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imaluckyduckie t1_iydoydc wrote

Reply to comment by deathelf11 in Found credit cards by deathelf11

Yeah. Federal law provides pretty good protections if you report the cards lost before someone tries to use them, but you start to have liability if there's unauthorized use before you report it. This is extra important it if was a debit card vs a credit card.

Either way, hope you earned some good juju for trying to do a good deed.

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imaluckyduckie t1_iydk7cl wrote

If you lost your credit card, it's best to get them reissued with new numbers right away. I wouldn't trust any random person on reddit returning them without thinking they were compromised (no offense, I know this is incredibly well-intentioned)

If you found someone's credit card, best to just destroy them

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