@carbon5327 @Tutanota It would make it obligatory for encrypted communication tools like Signal and WhatsApp to scan every message before transmission, and if suspected CSAM (child sexual abuse material) is found, send a copy to the police. This circumvents message encryption, which only protects your privacy when the message is in transit. Yes, a 'back door', and those tend to fall into the wrong hands.
Note BTW that when you use a smart phone with Signal, you have a large attack surface exposed to the Internet: every app might be breached and private material on the physical device exposed pre-encryption. The only solution to that is using a dedicated device on a dedicated network, only for authorized users. Pete Hegseth found that out the hard way. Still, Signal offers the best security possible when you're stuck using a smart Internet phone.
I have sometimes thought that someone should produce a cheap dedicated, hardened Signal phone containing only Signal, the Internet mobile telephony stack, and a camera. The thing to take to protests, or for investigative journalists.