出典:Wiktionary
Charlie + card, named after a fictional character in a folk song who cannot leave the Boston subway system because he cannot pay the five-cent surcharge required to leave the train.
CharlieCard (複数形 CharlieCards)
出典:Wikipedia
出典:『Wikipedia』 (2011/06/13 15:40 UTC 版)
The CharlieCard is a MIFARE-based, contactless, stored value smart card used for electronic ticketing as part of the Automated Fare Collection (AFC) system installed by the Massachusetts Bay Transportation Authority (MBTA) at its stations and on its vehicles. The CharlieCard was made available to the general public beginning December 4, 2006. The last metal token was sold on December 6, 2006, at Government Center station.