Suica has a pretty large sensing distance (85mm). So it can "power up" the card at a distance before getting close to the reader. To avoid large touch area cau

Suica has a pretty large sensing distance (85mm). So it can "power up" the card at a distance before getting close to the reader. To avoid large touch area causing accidental touches, places like vending machine requires you to keep your card within sensing area for up to 1 second before completing the transaction. reference: https://www.watch.impress.co.jp/docs/series/suzukij/1316685.html https://www.watch.impress.co.jp/docs/series/suzukij/1316685.... Speed test between magnetic ticket / IC Card / Credit Card https://www.youtube.com/watch?v=gAQM5NNnCi4 https://www.youtube.com/watch?v=gAQM5NNnCi4