Each "smart"phone (for "smart" read "spy") has a unique "mobile advertising ID" number which supposedly makes it possible for surveillance capitalism to profile the user without knowing per identity. It sounds nice, but businesses that link that ID to the user's name and address etc. are in use on an industrial scale.

Given the powerful incentives to make nonfree apps malware, and make online services into dis-services, I think schemes like this are unlikely even to be effective.

I advocate going back to the World Wide Web of 2000, in which users sent a web site only the limited data they actually wanted to send.