Comment by martheen

Doesn't seem too different from QRIS in Indonesia, authentication is relatively painless since some apps offer either pin or fingerprint. Being open standard (multiple banks, electronic wallet and payment gateways support it, multiple payment apps support it, all interoperable) probably help since there's never any delay I've experienced for years, and this system is handling from small payment on roadside hawkers to electronic purchase in large stores both offline and online.

More fancy payment flow are also available, such as vendors generating one-time QR code that already include the payment amount, and the user apps generating one-time QR code that the vendor scan, thus switching some of user steps to the vendor.

In most cities I've lived and visited, using QR is far more convenient than paper. Good luck using contactless when most phones don't support it, and even when Visa & MasterCard pushed their contactless standard, I never encounter a single vendor with a working machine (this range from small shops to large hypermarket). Maybe because they have bigger MDR than QR, but from customers PoV contactless simply don't work, until QRIS also adopt NFC and suddenly it's workable (but not widespread yet since most phones still don't)