Manual fare collection is the practice of collecting fares manually (without the aid of an automated machine). "Fare collection" generally refers to the collection of fares in the transport industry in return for a ticket or passes to travel. Commonly used on buses and train transport systems (in the UK; in Poland, for example, buying and validating the tickets by machine is the passenger's task; the passengers enter the bus through any of the doors and buying a ticket from the driver is an option where there is no automatic selling machine or if somebody forgets to buy a ticket before), manual fare collection is increasingly becoming obsolete with the introduction of smart cards such as the Transport for London 'Oyster card'. However, in the face of this trend, some companies have opted to retain more traditional methods of manual fare collection to both save money (automatic equipment is expensive) and ensure reliability. In the United Kingdom, examples of this can be seen on the Transport for London Heritage lines and the FirstGroupFTR routes in York, Leeds, Luton, and Swansea where bus conductors (dubbed 'customer hosts') have returned to work. The other reason(with lowering prices of electronics, and in most cases need to buy it once) may be for Heritage routes - tradition "look", for other routes(because of quite high monthly labor cost in UK) agreements and strong unions with the tries from politics to lower the unemployment rate by making overworking in public service.