Lyhyt kuvaus
The Helsinki Region Travel Card System is an electronic ticketing / fare collection system introduced in 2002. The Travel Card is valid on all modes of public transport in the HSL area. As a ticket media HSL is using cards based on ISO 14443 A compliant Mifare DESFire (plastic cards) and Ultralight chips (paper cards/tickets). Cards with Ultralight chips are for short period tickets, their validity time being from 2 hours to 14 days.