CC safety

There are several Credit card safety's devices to stop others from steeling your info.

As said you pretty much have to almost touch the pad for it to work. I wouldn't worry about somebody standing behind you with a high tech scanner, the technology just doesn't work that way. Although there are a quite a few people in this world that are more than happy to make misleading claims and take your money for a protective sleeve.

And seriously, what's the concern? It's a Visa. If they somehow steal your card you get the money back.

My unsolicited advice... Login to your visa card website or call the card company using the phone number on the back of the card and ask for assistance. Setup an alert that sends you a text any time the card is charged. Set the dollar amount for the alert as low as possible (typically $1). Then go about your day and don't give this another thought.
I have this setup and I often get that text while standing at the register waiting for my receipt to finish printing. If not I definitely get the text before I get to my car.

If you ever get a text when you know you didn't just use the card you can be concerned. Until you figure out that it was your monthly Netflix renewal. Yep even after many years I still get caught by that one every month.

Taping is much quicker so there is that. Safety is up to each person to be aware and check your account. One of our cards was hacked by an employee at a hospital snack bar where the reader was out of sight. Charged airline tickets 3 weeks in advance from Dallas. Credit card company folks were waiting.

And then there was a $900 pair of hiking boots (not a typo) delivered to us with the address changed the prior day...

Within a week of the charges we called and got a new card.

The card pretty much needs to be right on top of the device when "tapped" as you will find when you use it you've got to be within about half and inch for it to work. There are a lot of good facts about this here is one article from Square that may help. You will find the mag stripe won't be around for long by 2024 they will begin to disappear.