re: Anything interactive MUST collect data as a matter of course, and usually use that data
Really?????
Are you saying that any app that I interact with will collect my data?
I beg to differ. I've tested a good number of interactive apps using my home network and a packet sniffer.
My home firewall locks everything down pretty tight so when I get a new app, I have to open up the firewall so that it can be used by the app when my phone is on WiFi.
Things like timetable lookups and where my train is right now don't sniff my data.
I'm not saying that all apps don't slurp my data but to say that "Anything interactive MUST collect data as a matter of course, and usually use that data" is clearly wrong. Some apps do and some apps don't.