Megaphone appears to be a Spotify advertising platform for podcasts. https://megaphone.spotify.com/
Automatic Content Recognition (ACR) [42] is widely used for second-party tracking in smart TVs. As shown in Figure 1, ACR periodically captures frames (and/or audio), builds a fingerprint of the content, and then shares it with an ACR server for matching it against a database of known content (e.g., movies, ads, live feed). When the fingerprint matches, ACR server can determine exactly what piece of content is being watched on the smart TV.
The other commenters in this thread seems to be giving you good advice and moral support, so I’m just going to give my input which comes from a perspective that’s a bit different.
Sometimes especially when the options we have are contrary to our beliefs, we have to consider if we really need to be a part of it. Sometimes the burden is the smartphone itself. I don’t use smartphones and I couldn’t be happier, somehow my life didn’t end. The last one I had was the N900 and even though it was a pretty cool pocketcomputer, I guess it’s now been around 10 years since I last had a smartphone. I don’t miss it and especially not when I see other people who have one. It’s scary so addictive it seems to be. Pen and paper for data sharing and just calling people can accomplish many tasks.
Old people with bad eyesight also need banking, so I’d hope theres a bank out there who don’t require a smartphone. In my country banks use the national id for authentication and you can get a TOTP keychain for the 2FA instead of an app, perhabs similar options exist.
Anyway, I hope you find something that works for you. Life is a process.
There’s plenty to add from OpenNIC and you get access to some addition TLDs as a bonus ;)
I use the addon Redirector for rewriting urls to youtube etc. to private alternatives. I guess you can use it to rewrite startpage queries.
If the mail is sent unencrypted the admin can read it. What I have is a script that encrypt incoming e-mail with the users key, so that they are stored encrypted on the harddrive. That at least protect against an intruder reading past e-mails. I use a Perl script written by Mike Cardwell for that.
Another service you might like to have for your users is WKD/WKS, so that senders clients can automatically fetch the public key for your users.