Apple's new system only scans photos you attempt to upload to their cloud.
Nothing else is scanned.
Scanning the files on server, the way Google and Microsoft do it, means that false positive data is lying around where it can be subpoenaed and used to incriminate innocent people.
>Innocent man, 23, sues Arizona police for $1.5million after being arrested for murder and jailed for six days when Google's GPS tracker wrongly placed him at the scene of the 2018 crime
https://www.dailymail.co.uk/news/article-7897319/Police-arre...