Agencies choose fare systems after demonstrations held indoors on good days. The specification that matters describes what the system does when the network drops, the reader is frozen and a driver has seconds to decide whether to wave a rider on.
Agencies choose fare systems after demonstrations held indoors on good days. The specification that matters describes what the system does when the network drops, the reader is frozen and a driver has seconds to decide whether to wave a rider on.
Many fare-system vendors are paid a share of the fares they process. That gives the vendor a financial stake in fare policy, and it is a stake no agency should have to negotiate around.
Account-based fare systems record where and when an identifiable person boarded, often for years. Most of the value of that record expires within weeks while the risk does not, so retention should be short by default and long only by a public decision.