Cookies and external services
The site uses external video players and Yandex Metrica to measure visits and enquiries.
Controller details will be added later.
Version: 2026-10-07
Browser preferences
The theme key in localStorage keeps your visual preference until you remove it. This is a local preference, not marketing consent. The site no longer stores a separate external-player permission choice. Explicit UTM and yclid campaign tags are kept in sessionStorage under dudukist-campaign-v1 within the tab and used for no more than 24 hours, so navigation between pages preserves an enquiry's source. An expired record is removed on the next page load, navigation or enquiry submission. A newly tagged campaign replaces the previous one. Full query strings and form names, phone numbers and email addresses are not included in this record; it works independently of Metrica.
External players
Video blocks with a cover load the player after you press Play. Embedded players on lesson pages may load when the page opens. External video services receive technical request data, including IP address and browser information, and may use their own cookies. Their policies apply in addition to this policy.
Browser settings
Manage third-party cookies and remove saved data in your browser settings. The site does not display a separate external-player permission window.
Yandex Metrica
Yandex Metrica counter 24182368 on dudukist.ru measures page views, referrals and successful form submissions. It may store cookies and process technical visit data. The site code does not enable Session Replay or form-content recording. Submission events include only the form type, opening location and page language, without contacts or answers. Blocking Metrica through your browser does not prevent enquiry submission.
Personal data policy · Consent to personal data processing · Cookies and external services