FlyerTalk Forums - View Single Post - Is it better to purchase my subway/bus pass here in the US or when I get to London?
Old Mar 9, 2012 | 3:19 pm
  #52  
RichardInSF
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Originally Posted by mtkeller
I had a friend here in November, and he had no problems using his non-chip Visa from the US in ticket machines. The AmEx vs. Visa/MC thing immediately suggests that you didn't call your card issuers in advance so they'd authorize your card abroad. This is not a problem with AmEx.
I've never gotten my US Amex to work in a tube machine that took credit cards, including on my last trip about a month ago.

So some folks are just lucky, I guess!
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