In order to prevent stores from evading taxes, every receipt in Taiwan is automatically a lottery ticket, too, which can win up to $300k, turning customers into voluntary tax auditors:
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I used to win about $20 usd a month from receipts over there.
Also if a store doesn't give you a receipt you can report them and they get fined.
Also lots of mom and pop stores will offer discounts if you do an off the books transaction
What a genius idea.
In Italy, tax evasion was so bad that they just hired pretty female tax police to ask you if you had a receipt when you exited a store.
They were called the Finance Guards.
Portugal does something similar. The government takes part of your income in taxes, and you can win some back if you ask for the receipt in your name 
Translated from Chinese
I'm from Taiwan, and I confirm this is real
Besides the grand prize, we usually get the smaller prizes
Around 6U, and if it's a digital invoice, there'll be an extra reward of about 20U
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Privacy crypto cards ftw!
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It's a fun idea, but not sure that 7-Eleven or McDonald's are avoiding taxes anyway... And lots of small business accept only cash and give you handwritten note instead of receipt, and nobody complaints about them.
lol same in Brazil with weekly prizes
and you have to provide your CPF (equivalent to SIN in the US) to the store so they can input in the receipt
then you scan it with a government app and you get entered into the draw
Heads up... small shops, street vendors, are often exempt from issuing Uniform Invoices like this and so do it by hand or other methods and avoid it.
Not if the machine βaccidentallyβ smudges the qr code
Basically pay pennys to turn civilians into free Gastepos
