Hand-brushed pos has no proof of consumption.

We can use the official software of China UnionPay to name it China UnionPay Express, and bind the credit card after downloading, so that every subsequent consumption will have news and bills. This bill is actually the same as a credit card receipt. You can see the time, place, industry, merchant who swiped the card, 15 merchant number.

What is the consumption voucher of pos machine?

It depends on what pos machine it is. If it is a pos machine with a receipt, the consumption voucher is a receipt, and the receipt has a merchant stub and a cardholder stub, all of which are vouchers; If it is a pos merchant, you must keep the merchant stub for the cardholder to sign. If the cardholder can call the bank to deny the transaction within six months after swiping the card, if the merchant can't find this voucher, it will be more troublesome. Now some people refuse to pay maliciously, although malicious refusal is generally unsuccessful. Moreover, the cardholder may go to jail for fraud, but it will cause great trouble to the merchants. If it's a pos machine that doesn't open receipts, it's electronic certificate. Similarly, the cardholder should sign on the mobile phone screen, and the signature should be standardized.