Legal
Cookie Policy
Effective September 12, 2026. This notice describes the analytics cookies, browser storage and controls currently used by this site.
1. Analytics on the first page load
Google Analytics 4 and Yandex Metrica, including Webvisor session replay, start immediately unless you previously opted out in this browser or Global Privacy Control is enabled. The on-page notice describes active measurement; closing it is not a consent action.
| Storage | Purpose | Typical duration |
|---|---|---|
| _ga and _ga_* | Google Analytics browser and session measurement | Up to 2 years; may be refreshed |
| _ym_uid and _ym_d | Yandex visitor identifier and first-visit date | 1 year |
| _ym_isad | Yandex ad-blocker detection | 2 days |
| _ym_visorc_* | Yandex Webvisor session recording | 30 minutes |
| Yandex LocalStorage entries | Measurement state, identifiers and request coordination | Provider-managed; browser storage can persist until cleared |
| adf.analytics and adf.analytics.notice.v1 (LocalStorage) | Your analytics choice and notice dismissal; not a visitor identifier | Until changed or browser storage is cleared |
| adf_analytics (first-party cookie) | Fallback analytics on/off preference | 1 year |
The actual set depends on provider version, browser restrictions and enabled features. Provider domains may also receive their existing cookies. See the current Google cookie reference and Yandex storage reference for other vendor entries and lifetimes.
3. Email and external links
Clicking the email link opens the email application configured on your device. Clicking a GitHub link takes you to GitHub. Clicking a booking button takes you to Calendly, where its own cookie choices and privacy notice apply. No Calendly widget or script is loaded by this website. Those services may use their own cookies or storage after you choose to visit or use them. This website neither controls nor preloads those third-party services.
4. Change your choice
Use Analytics settings in any page footer, then choose Turn off analytics to opt out. The choice is stored for this browser and the page reloads without loading either provider. Known first-party Google and Yandex analytics cookies and Yandex analytics LocalStorage entries are removed where accessible. We cannot erase cookies on provider domains or recall already transmitted data.
Global Privacy Control blocks both providers before loading. If browser storage is unavailable, an off choice applies to the current page and a warning is shown; use Global Privacy Control or a tracker blocker for later pages. Clearing site data or using another browser can reset a saved choice. You can explicitly enable analytics again unless Global Privacy Control is active.
The website remains usable with analytics disabled or blocked. No tracking pixel is loaded as a JavaScript-disabled fallback.
5. Contact and changes
Questions about cookies, storage or privacy rights: bpall@mail.ru. The Privacy Policy describes recipients, purposes and rights. This policy will be updated when the implementation changes.