Dean Mayhew gets his Tesco Clubcard QR code tattooed on his arm. See SWNS story SWSYclubcard. A man had his Tesco Clubcard permanently tattooed onto his arm because he kept forgetting to take it with him when he visited the supermarket. Dad-of-seven Dean Mayhew, 30, said he thought about the tattoo for several months before deciding to go under the needle. He said despite shopping in Tesco up to three times a day, the scaffolder regularly found himself having to pay more because he forgot his loyalty card. So he got the QR code for his card tattooed on his right forearm - and it works perfectly under the scanner at the till.