The State Railway of Thailand (SRT) has introduced QR Code as an alternative payment method for passengers.
Kasikornbank code readers were installed in 56 main stations across the country, 14 of them in Greater Bangkok, including Hua Lamphong.
Deputy SRT governor Voravuth Mala said on Thursday the new payment method was part of its long-term goal to be a cashless train service provider.
Paying fares by QR code are in line with the trend and changing behaviours of consumers, he added.
The goal looks distant as 92% of riders still pay tickets in cash and the rest by credit cards, according to SRT figures.
Trains carry 2.4 million Thai and foreigner passengers a month.