Originally Posted by
airoli
To update on my own question, I had another European friend visiting this week and he was able to use his European EMV-enabled Mastercard to buy a ticket from the STM machine.
So it seems that international cards are now accepted. ^
I used my US (non-chipped) credit card and it worked too.
I took it last week and it really was very easy to miss your stop. I located myself only a stop before mine, having caught Sheraton in the corner of my eyes. I don't understand why they can't at least show the number of the next stop inside the bus.