If you ever have visitors over to Tokyo, you might end up buying them a travel pass like Suica or Pasmo so they can use the trains without having to figure out the right fares. Keikyu has just released a Pasmo card holder aimed at tourists which is only available at their newly-opened information centre in Haneda station (Japanese map here). You get one free when you buy an ordinary Pasmo card there but you'll only be able to do so until the end of March next year. It's the kind of small gimmick some of my guests would appreciate so I thought pass on the news.
(EDIT: You have to show your passport to buy one so it looks like the offer is restricted to non-residents.)
