This is an additional way for taxi drivers to make money and gain new customers.
A taxicab, also known as a taxi or a cab, is a type of vehicle for hire with a driver, used by a single passenger or small group of passengers, often for a non-shared ride.A taxicab conveys passengers between locations of their choice.
Taximeters can include several accessories, or act as components in larger dispatching/control systems.
Features include: Ticket/receipt printer Fraud control and prevention (on the part of the owner or operator), through the impression of control tickets or computer monitoring.Additionally, taximeters are often visually sealed by a municipal weights and scales authority after initial calibration. Radio communication, allowing trip status to be monitored by a dispatcher or supervisor. Dispatching of trip assignments through radio or data systems. Interaction with GPS systems to assist with dispatching and to provide security. Seat sensors that detect the presence of a passenger (to prevent a cab from carrying fares without activating the taximeter). Credit or prepaid card support.Źródło: https://en.wikipedia.org/wiki/Taximeter.