Earlier quoted context omitted.
American here. What makes "suica" a superior contactless payment method? EDIT: Thanks for the replies! Seems it's a more full featured version of Chicago's Ventra card.
Lots of places in Japan don't take Visa/Mastercard, so it's either Suica/Pasmo or cash. There's tons of vending machines, for instance, but they don't take credit cards, but a lot of them do take Suica. Suica is basically a debit card; you put money on it (there's terminals at all the subway stations) and then spend it on the subway/train fares and also at other places that accept it, like vending machines, taxis, an…
I use Suikakeibo [0] for that. The latest 20-ish transactions seem to be stored on the card, so by scanning it using my phone every day I could keep a history of everything I used it for. You can even put in notes, since non-transit transaction don't list what you bought with it - just the amount.
It makes for a nice reminder of my past trips. =)
[0] https://play.google.com/store/apps/details?id=net.mediavrog....