Not true. Apple has demonstrated how to do it and has published a paper on the topic. A. Bhowmick et al. Protection Against Reconstruction and Its Application

Not true. Apple has demonstrated how to do it and has published a paper on the topic. A. Bhowmick et al. Protection Against Reconstruction and Its Application in Private Federated Learning, 2018. Don’t just dismissively say “oh that’s different and doesn’t apply” until you read it and understand the range of problems Apple is tackling with this and similar approaches. A lot can be done when the organization makes privacy a priority. Let’s not forget I am replying to a person who has chosen to use a throwaway account for this topic. Why did they do that? Hmmm.