I've been looking at using Scanner Pro that I already have on my phone for digitizing old photo prints. I don't really have any room for a flatbed and the scanners on AIO printers tend to be sub-par.
(Invision lets you @ tag usernames, just sayin'
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Edit: There are two fairly new CanoScan LiDE models that have Mac compatibility, although it doesn't mention if it's 64-bit or not. Canon's photo scanners have always been very good and priced reasonably.
https://shop.usa.canon.com/shop/en/c...photo-scanners