Read it yesterday. I found the part where the government tells Google and Apple to keep it a secret, and they do, to be the most fucked up of this whole thing.
Federal government is using data from push notifications to track contacts
Apple and Google had been told to keep the practice secret until Sen. Ron Wyden revealed it in a letter Wednesday
https://www.washingtonpost.com/technology/2023/12/06/push-notifications-surveillance-apple-google/
Discussion
Smartphones are a surveillance tool :(