The most surprising thing about this whole story is that he's been scanning all his receipts for the past 25 years. I've never heard of anyone doing this before and don't really know why you would want to.
Still, it made for a somewhat interesting exploration of AI techniques.
I did this, perhaps thirty years ago (rocking a flatbed in the 90s #ROFL)... for about two years. Then decided that OCR was terrible. I revisited on a multifunction copier, mid-00s — to the same conclusion.
Once this can be run entirely offline, with simple github installer [0]... I'll be scanning again. This definitely "reminesced a nerve" that "took me back..."
Unfortunately not looking good for accountants, among others...
[0] I'd recon the majority would use a cloud-based, off-device processing — they just selfie each receipt
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Ten years ago I still used a smartphone; when the banks started allowing mobile deposit, was a very Trekkie day for me...
Still, it made for a somewhat interesting exploration of AI techniques.