So I went to ACE Hardware today to pick up some metric fasteners. I went to cash out with my debit card (as credit) but he clerk was having problems. I was there a week ago and the card worked just fine. So, she had to manually enter the number, exp. date, and billing zip. It processed. Then she said she needed to make a copy (using the old machanical swipe onto the carbon copy) as it was their policy if they have problems using te digital swipe. After she made the copy I saw her copy the CVC onto the carbon receipt. Now I'm concerned. I got my first card before these machines so I don't know if that's common process. I didn't want to raise a scene so I just accepted and left. Should I be concerned?