Systems that are based on one-time codes instead of permanent credentials are really under-appreciated in the anglosphere.
Giving your credit card to your child / friend / spouse / subordinate, so that they can buy something with your money, is a lot more risky than giving them an OTP, valid for a single transaction, which you have to approve in your app anyway.
Poland's Blik is based on 6-digit codes, which makes this feature even more useful, as you can E.G. dictate that code over the phone to a trusted acquaintance at the ATM.
Giving your credit card to your child / friend / spouse / subordinate, so that they can buy something with your money, is a lot more risky than giving them an OTP, valid for a single transaction, which you have to approve in your app anyway.
Poland's Blik is based on 6-digit codes, which makes this feature even more useful, as you can E.G. dictate that code over the phone to a trusted acquaintance at the ATM.