they are old school and took over for barcodes around the year 2001 even through they were created in 1994 in Japan by Denso Wave company
The QR code stated to really take off around 2010 but the average person started using them with social media apps like Line when 3g became inexpensive (2013 ish)…now with 5g being inexpensive people are using it for more endeavors like personalized payment systems
They will keep evolving until something better comes along
no gift cards to refill the prepaid acct or a bank to bank transaction or blockchain to app refill
Or old school cash to booth refill
There are multiple ways to refill…not all will require cold hard currency in your hand
With adoption, metrics and feedback the best solution will happen…it takes time but as you can see by just walking around its basically universally loved and accepted in a short amount of time
Plus why do you need hundreds of thousands of baht if you only want to do is buy street food and other items from street vendors…the avg person for those costs will only need ฿5,000-฿15,000 on the app for their 10-21 day holiday and anything left over will just be a savings for them
All other transactions will most likely use a credit card in malls etc