Along the same lines, I found India's Aadhar system to be pretty extraordinary. If you can put your civil liberties concerns aside (and to be clear, I don't think you should), Aadhar has made govt services in India several orders of magnitude more efficient and fraud resistant. I recently sold a piece of property in India and it took literally 10 minutes to do the transaction at a local district office. You just go to a place and get a scan while signing a document that says you are transferring the property. That handles everything ... changing the owner in the public registry, etc.
Compare that to buying a house in the US where you need to use all kinds of third party title insurers etc., because you can't necessarily be sure the person selling you the land actually has ownership of the land in the registry at the moment you are doing the sale.
Also, payment systems in India charge merchants something like 0.1% or less, while credit card companies charge merchants 3-5% in the US. In India everything is cheap because online transactions are very secure ... your Aadhar identity allows you to generate one time codes that are sent to vendors to authorize payments. Even if the one time code is stolen, it can only be used one time. Contrast that with the USA where if someone just gets your social security number and address, they can often impersonate you and charge thousands of dollars against your identity. That insecurity has spawned billions of dollars of costs in the US economy and enriched Visa and Mastercard. Its dead weight on the economy.