In all reality you'll be fine in the UK, and worried about nothing. I went there with mag stripe only cards, and I had no trouble at all.
I'm not in the least bit 'worried' about going to the UK.
What I am telling you is that when I was last there in 2007, when visiting restaurants or smaller shops outside of the main tourist areas such as London, people would look at my magnetic strip Visa card like I was showing them an 8 track.
They had already been on board with chip and PIN for three years at the time. Checks (or Cheques) were all but gone.
So at this point using a non-chip card seven years later will be harder in certain areas of the country.
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We're going to leapfrog contact chip cards except as a fallback. Recent breaches have thoroughly discredited the swipe to the point where customers prefer security almost all else. Apple came out with the right product at the right time and it's already bringing up the rest of the industry: AMEX brought back contactless chip cards recently and Google Wallet's finally gotten some good promotion. In a couple of years most people won't even be dipping the chip--they'll tap the card or phone.
That's a nice spin to put on it.
But yes, let's hope Apple can provide some urgently needed improvements in this area for sure.
What concerns me, is by the same logic that we got stuck with our antiquated magnetic strip technology, we now have evil corporations banding together to try and kill each others payment methods.
We have the Walmart consortium conspiring to shut down Apple Pay in stores like CVS and RiteAid even though they already have the equipment and capability of accepting the system.
And they are trying to offer this BS system of photographing QR codes.
Just remember, we're still using the Imperial system here in America, despite literally acts of Congress to have us move forward to Metric. While the rest of the world enjoys a much easier system of measurements that is also the same as what the scientific community uses.
So who's to say that Walmart will not successfully kill Apple Pay and leave us with that debacle they are working on, which no one else in the world will accept.
I do hope such a scenario never plays out and that Apple pay and other similar non-Apple NFC methods win out. Because I think Apple pay is awesome. I've used it at Walgreens a bunch and love it.
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Also side note, if you have your cards in Apple Pay, it works internationally with US cards. Use that to save some trouble.
I have four cards loaded up on Apple Pay, and definitely will be on the look out to try it abroad!