It's labeled "Unique data points". See the number 2 - Usage Data for Gemini, there's an arrow with label there.

perhaps it's the limit imof each data type?!

gemini harvests only your first four cobtacts, your last two locations, and so on.

how does one defeat that? have fewer than four friends and don't go out!

I just came across this article which for people who are into self hosting can take a look and participate. It's basically a tool that generating never ending web pages with non sense that load slow (but not too slow the AI tools move on) to slow down and thus cost them more to scrape the internet if enough people are doing it. You can also hide it in a way that legit user would never see this on your site:

https://arstechnica.com/tech-policy/2025/01/ai-haters-build-tarpits-to-trap-and-trick-ai-scrapers-that-ignore-robots-txt/ https://zadzmo.org/code/nepenthes/

Pretty sure this is what they scrape from your device if you install their app. I dont know how else they would get access to contacts and location and stuff. So yeah you can just run it on a virtual android device and feed it garbage data, but i assume the app or their backend will detect that and throw out your data.

They're talking about what is being recorded while the user is using the tools (your prompts, RAG data, etc.)

Anthropic and OpenAPI both have options that let you use their API without training the system on your data (not sure if the others do as well), so if t3chat is simply using the API it may be that they themselves are collecting your inputs (or not, you'd have to check the TOS), but maybe their backend model providers are not. Or, who knows, they could all be lying too.