Use of cookies

Updated 30.09.2026

By continuing to use masterclients.pro and the Master Clients service, you consent to the processing of anonymized data, including cookies, to keep the website working and to improve the service.

What cookies are

Cookies are small text files that a website stores in your browser. They help the website recognize you between pages: remember that you are signed in, which language you chose and which display settings you prefer. In addition to cookies, the website uses browser storage (localStorage and sessionStorage) for the same purposes.

Cookies we use

PurposeWhat is storedDuration
Essential — sign-in and securitysession ID (MSSESSID), form security token, selected languageuntil the browser is closed or the session ends
Cookie consenta note that you clicked «OK» in the notice (mc_cookies)1 year
Interface settingscalendar view, zoom, collapsed menu, sign-up form draft (without the password) — in browser storageuntil you clear them
Notificationspush notification subscription for bookings — only if you enabled ituntil you turn notifications off

We do not use advertising cookies and do not sell visit data to third parties.

Third-party services

To load pages quickly and correctly we use external services that receive technical data (IP address, browser details) in anonymized form:

  • jsDelivr and cdnjs — interface libraries (Bootstrap, icons, editor, QR codes);
  • Google Fonts — fonts;
  • Yandex Maps and Google Maps — only on pages of companies that added a map.

How to opt out

You can block or delete cookies in your browser settings at any time. In that case some features may not work: for example, you cannot sign in to your account without the session cookie.

Questions: info@masterkassa.com.