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I have used at Mc Donalds
I use my Freedom card's contactless transaction often at the local market for smaller purchases. It's not much different than swiping except the card gets less wear.
Also I forgot to mention I also have my Freedom card on my phone to use with the Isis app, I do noyt even have to take the card out of my wallet, although it could take longer than using the actually card, and also it does not work with all phones