Related link: http://www.nttdocomo.co.jp/service/data/mzone/
On a recent visit to Japan, I took the Tokyo Metro to the Meiji Shrine. As I was getting off at the nearest station, I noticed a sign announcing wireless LAN service on the platform. At the time, I only had my tourist gear with me (the 802.11-equipped laptop was back at the hotel), and couldn’t see what the service was like.
It must be very convenient whenever there are train delays to be able to pull out a PDA and get networked. I wouldn’t be surprised if the wireless LAN service is part of a longer-term plan by NTT DoCoMo (the operator) to offload mobile phone minutes on to much cheaper unlicensed spectrum. It’s a lot easier to put 802.11 access points underground than mobile phone equipment, and much less costly to expand.
The picture is a bit fuzzy because I snapped it with my camera phone, but here it is.