[nicce]

Bugs are kinda slippery slope arguments as well, since they are impossible to prevent or measure with 100% accuracy. These are stopped in human review. (Hopefully)

It seems that this system might be extremly resistant for collision to prevent them ending up to human review.

https://news.ycombinator.com/item?id=28305946

> It wastes your CPU resources and network resources to do something that only benefits apple

Okay, how practical is this problem? iCloud already scans your files to know whether they are need to be synced. And this scan applies lesser times, only once before upload per file.

Encryption does not mess with the filesize, so we are talking about few bytes of extra metadata per image here. Regular image with raw format is tens of megabytes.

[vineyardmike]

> Okay, how practical is this problem? Mobile phones operate off battery and can be very important tools for safety and navigation. Every wasted minute of battery is important.

> Encryption does not mess with the filesize

No but giant bloom filters take storage.