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zackwu

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Fintech/finance is a very big industry and there are a lot of sub-domains. A HFT system programmer thinks about how to colocate their prod machines in NYSE and use zero alloc techniques to ingest marketdata as fast as possible, while a crypto wallet app developer spend more time designing cool UI to attract users and working out all the L1/L2 quirks. And I'm sure they have very different answers to whether to use integers and how many digits to preserve

As pointed out by many comments, the post seems US-centric and using zip code doesn't work for all countries.

But just for reference, in Singapore, we use 6-digit zip codes, each of which can uniquely locate a single building, so yes, a lot of local websites essentially just expect a zip code plus unit number, without the hassle of typing out the address at all.

Maybe what I wanted to say is, the idea is cool and _can_ work to enhance user experience with proper localization.