Principal functions of an electronic ticketing system
Electronic ticketing can be regarded as a payment system which enables a person to pay in a simple, secure and efficient way for a service used. Electronic ticketing is associated with travel and specifically with the use of a transportation service. The payment system is based on electronic information transferred between the various operators in the system.
The customer obtains an electronic ticket medium (smart card) which is the storage location for electronic tickets. When a ticket is sold, it is registered in the ticket medium and validated before use. In connection with the sale and use of tickets, electronic information is stored and processed for the purpose of producing:

Billing data

Revenue data

Statistics (about the sale and use of tickets)
Billing data are used in the sharing of ticket revenues among the various operators involved in the ticketing system.
An electronic ticketing system may also incorporate a number of other functions:

Ticket inspection function

Internet services (for example online sales of tickets)

Driver settlement functions

Cash deposit functions for drivers

Etc