When it comes to dipping the chip, it can wear down after a lot of use and stop functioning. I've never run into a problem with tapping however. Here's an exam

When it comes to dipping the chip, it can wear down after a lot of use and stop functioning. I've never run into a problem with tapping however. Here's an example image from a NY Times story about chips wearing down: https://i.imgur.com/XlKEBsc.jpg https://i.imgur.com/XlKEBsc.jpg The last card I replaced due to chip wear, the chip looked even worse than that.