China is to pilot E-ticket for high-speed trains nationwide next year, Lu Dongfu, general manager of China Railway Corp, said on a forum recently.

Passengers will be able to swipe their phones or ID cards to enter into the station, without presenting paper tickets, said Lu.

Entering railway stations by swiping ID card is now available at railway stations in most big cities across China, while at stations in some remote areas, passengers still need the paper ticket to get on the train.

Up to now, the upgrading and transformation of train tickets in China has gone through four generations. Now let's take a glance at them.