Understand the QR Code!
With many vendors moving to QR codes as a payment method in Thailand, make 100% sure you know the QR code and the cost of what you are buying.
A recent situation in Chiang Mai resulted in a Chinese couple placing QR codes in a Thai restaurant to lead unsuspecting tourists to click on their QR to Chinese Apps and not the QR of the restaurant.
With all the scammers around, please pay attention to the QR code!
Know exactly what you are paying for and how much.