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Cookies

Version 1.0 · In effect from 1 September 2026

Tencoline sets one cookie, and only after you sign in. Everything else it keeps in your browser is a setting you chose. This page lists all of it and gives you the switch.

Contents

  1. Your choice
  2. The cookie we cannot do without
  3. What we keep in your browser, without cookies
  4. Analytics
  5. Global Privacy Control
  6. Blocking cookies yourself

1.Your choice

Current choice: Not set

Your choice applies at once and is stored in this browser. It does not follow you to another browser or another device, because it is stored on the device rather than against your account.

Declining costs you nothing. Every part of Tencoline works the same either way, and we do not ask again after you have decided.

2.The cookie we cannot do without

One cookie, set only after you sign in. Without it the server cannot tell one signed-in person from another, so there is no consent to ask for: it is strictly necessary under Article 5(3) of the ePrivacy Directive and § 25 Abs. 2 TDDDG.

NamePurposeExpiresSettings
tcl_sidKeeps you signed in7 daysHttpOnly, Secure, SameSite=Lax

HttpOnly means no script on the page can read it, including a script somebody managed to inject. SameSite=Lax means another site cannot make your browser send it.

3.What we keep in your browser, without cookies

These are stored in your browser's local storage. They never reach our server, they hold no identifier, and they exist so the application looks the way you left it.

KeyWhat it holds
tcl-cookie-consent-v1Your analytics choice, and when you made it
app-theme-dark-modeLight or dark theme
tencoline_show_marks, tencoline_show_actions, tencoline_show_summary, tencoline_show_tv_score_overlayWhich panels of the video player are open
tencoline_marks_follow_playhead, tencoline_actions_opponent_modeHow the marks list and the action buttons behave

Clearing your browser storage removes all of them, including your analytics choice. You will then be asked again.

4.Analytics

No analytics are running on this site today. The application is prepared for Google Analytics 4 and the tag is not installed, so no analytics cookie is set, whatever you choose above.

We keep the choice available because the switch is wired and could be turned on. If it is, this is what it would set, and it would set nothing until you accepted:

NamePurposeExpiresSet by
_gaTells one browser from another for visit counts2 yearsGoogle Analytics 4
_ga_<id>Keeps the state of a single visit2 yearsGoogle Analytics 4

We use no advertising cookies, no social network buttons, and no external fonts or scripts from a content delivery network. The fonts and icons are served from this domain, so loading a page tells nobody else that you were here.

5.Global Privacy Control

Some browsers and extensions send a Global Privacy Control signal with every request. It means the person has decided, once, that they do not want their data used for analytics or advertising anywhere.

We honour it. When we receive it, analytics stay off and we do not ask you again. It is read in your browser and never sent to us as a stored value.

We are not receiving the signal from your browser right now.

6.Blocking cookies yourself

Every browser can block or delete cookies, in its privacy settings. Two things follow from that, and neither is a fault.

  • Blocking the tcl_sid cookie makes signing in impossible. The server has no other way to recognise you.
  • Blocking local storage loses your theme, your panel layout and your analytics choice on every page load.

Questions about any of this go to privacy@tencoline.com. The wider picture is in the privacy policy.

The other legal documents

  • Privacy policy

    What we collect, why, and the rights you have over it.

  • Terms of service

    The contract between you and us for using Tencoline.

  • Acceptable use

    What you may and may not upload, film and share.

  • Copyright complaints

    How to report content that infringes your rights.

  • Data processing agreement

    Art. 28 GDPR terms for coaches, clubs and academies.

  • Subprocessors

    Every company that can touch your data, and what for.

  • Legal notice

    Who operates this site, as required by § 5 DDG.

Tencoline.

Tencoline is a tennis analytics platform for players and coaches.

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