Walmart checkout cameras and identity

A few months back, I bought a cap that was supposed to help block IR cameras. Today, I wore it into Walmart. I had to leave before finishing, so went to self checkout. My card wouldn’t work; I paid cash. A bit later, I went back and finished shopping. At checkout, my card wouldn’t work again. The cashier was doing everything she could to get it to work. I was even saying I was going to have to get a new card. But then, I realized it could actually be my cap. I said, “just a second; lemme do this..” and I took my cap off, stuff the card in and bam! No problem! Of course, I helped her and others around me see what had just happened: I could not use my debit card without having my facial features recognized. So disturbing and infuriating