[daemoon]

Simply turning off iCloud Photos will ensure that photos on your iPhone are never scanned. Why are you trying to make this thing about photos stored on-device? Photos in iCloud have always been available to Apple through iCloud backups. If you are concerned about privacy, turn it off.

"And it does so while providing significant privacy benefits over existing techniques since Apple only learns about users’ photos if they have a collection of known CSAM in their iCloud Photos account."

[arvinsim]

So if an offender turns off iCloud then this move will absolutely be useless??

How would that help catch them if they can simply flip the switch?

[daemoon]

> So if an offender turns off iCloud then this move will absolutely be useless??

No on-device photo scanning unless iCloud Photos is enabled. Isn't funny when you get the most important aspect wrong?

> How would that help catch them if they can simply flip the switch?

They never claimed that this would help "catch them" if they are not using iCloud Photos.