I believe Signal can already deal with this, but the government would probably have to be forced by law to do it in a more explicit way.
Like, they can use self-disappearing messages, but all messages are automatically archived and encrypted with a pre-set password. I guess this could still open the data to being stolen if the password is discovered, but I don't really see any other solution to making both self-disappearing messages and FOIA requests working at the same time.
Like, they can use self-disappearing messages, but all messages are automatically archived and encrypted with a pre-set password. I guess this could still open the data to being stolen if the password is discovered, but I don't really see any other solution to making both self-disappearing messages and FOIA requests working at the same time.