[soruly]

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....

Speed test between magnetic ticket / IC Card / Credit Card https://www.youtube.com/watch?v=gAQM5NNnCi4