[solids]

But this will be triggered only while uploading to iCloud, so if you are not using iCloud for photos the algorithm will never run? Or that’s why I understood.

[andy_ppp]

For now, the next step is to do on device scanning with fuzzy hashes whatever that means.

[samrolken]

What does that mean?

[dwaite]

Correct, Apple confirmed this hash-matching is only for their own iCloud Photos service (and appears to be designed with that service in mind).