Eli5: How does the chip in credit/debit cards provide an extra layer of security?

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More and more card readers at POS terminals now support tap to pay means of making a payment. If we are not inserting the chip end of the card, how is it providing additional security?

Edit: wow, lots of great information, thank you folks for taking the time and explaining it like I’m 5.

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Anonymous 0 Comments

I just today had to get gas. I normally go inside, pay cash and pump my gas. I had a few minutes to spare today so I see that the pump had one of those tap to pay emblems. I tapped my card on it filled up with gas, got my receipt and was on my way. So now my question is this, suppose I dropped my card on the ground and drove away. Someone found my card, what’s to keep them from doing the exact same thing that I just did? And how could I get my money back that they just used off of my card?

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