Privacy

What ZETO collects, what it is used for, and how to have it removed. Effective 2026-09-16.

Signing in

When you press Continue with Google, Google sends us the email address on your Google account and tells us it is verified. If sign-up is not open to you yet, we keep that address, whether you asked us to write to you or not, together with what you chose on that screen, the page you arrived from, and an approximate location (country, state, city) worked out from your network address. We use it to know who is waiting to get in, to recognise you if you come back, and — only if you asked, or if the screen said we would unless you declined — to send you one email when sign-up opens. We never use it for other marketing without asking you first, we never sell it, and we never send it to anyone to learn more about you. We keep it until you ask us to remove it. To have it removed, press Continue with Google again and choose "forget my address", or write to tcmprog@gmail.com.

This browser

We set a cookie that groups this browser's visits so the page can remember what you looked at; we log what you looked at, before and after you sign in, on servers we run or that run on our behalf, and no third party's code or cookie runs on our pages. If your browser sends Global Privacy Control we record that. We never sell or share what we collect about anyone, and if you create an account, personalising what you see and any advertising targeting start switched off.

Location

Approximate location is derived from your network address using GeoLite2 data. This product includes GeoLite Data created by MaxMind, available from https://www.maxmind.com. We keep your network address itself only in a short-lived hashed abuse counter and, for an account you sign in to, as the address each session was opened from, for a limited time for security.

What we collect

Who else sees it

The sign-in provider you chose (it tells us your address; we tell it nothing back). The companies that host our servers, our database and our image delivery, and the companies that receive our error reports and performance telemetry — all of which process data on our behalf and for no purpose of their own. Nobody else: we do not sell or share what we collect, and no advertising network, analytics vendor or data broker receives it.

Do Not Track and Global Privacy Control

Nothing we do depends on tracking you across other sites, so neither signal changes what a signed-out visitor sees. If your browser sends Global Privacy Control we record that beside the visit, and an account created under it starts with personalisation and any advertising targeting switched off.

Reviewing or removing it

To have a refused sign-in’s address removed, press Continue with Google again and choose “forget my address”. To review or remove anything else, or if you no longer have the account you signed in with, write to tcmprog@gmail.com.

Changes

Effective 2026-09-16. We post changes here with the date, and we do not apply a changed policy to data collected before it without asking you.