The software of the machines, which are 7-8 years old, was updated, and German, as well as English, added to the language choices. The machines' 3G mobile technology was swapped out for 4G devices, speeding up the purchasing process.

The upgraded machines will no longer print invoices, but deliver them to passengers via email.

There are 313 ticket vending machines in 180 locations around the capital.

The machines generate about 60% of BKK's revenue from tickets. Mobile ticket sales now account for 20% of sales, BKK noted.