Cookies and measurement

Cookies, without the mystery.

Essential storage keeps the site secure. Everything used for optional measurement stays off until you choose it.

See storage details

Essential storageAlways available

Optional measurementOff by default

Your choiceChange anytime

Storage register

Storage used by this site

Optional measurement is off until you choose it. You can use the website and contact form without accepting analytics. "First-party" describes who operates a service; it does not remove your privacy choices.

Purpose	Storage	Duration	Choice
Privacy preferences	`achos.consent.v2` in local storage	Until cleared or a new notice requires another choice	Essential preference
Light/dark preference	`achos-theme` in local storage	Until cleared	Chosen preference
Website session	`__Host-achos_visit`	30 minutes inactive	Website analytics consent
Return-visit identity	`__Host-achos_visitor`	Up to 30 days	Analytics and separate attribution choice
Microsoft admin sign-in transaction	`__Host-achos_campaign_oauth`	10 minutes	Essential, admin host only
Campaign-admin session	`__Host-achos_campaign_session`	30 minutes idle; eight hours maximum	Essential, admin host only
Google Analytics diagnostics	Provider storage, including `_ga` identifiers where enabled	Provider/configuration dependent	Separate diagnostics consent
Microsoft Clarity diagnostics	Provider storage, including `_clck` and `_clsk` where enabled	Provider/configuration dependent	Separate diagnostics consent

Measurement

What campaign attribution means

A campaign link can carry a short-lived opaque handoff. We remove it from the address bar before optional diagnostics load and keep it only in memory pending your choice. We do not create attribution cookies without the relevant consent. A forwarded link can still be associated with its original message, so link association is not verified identity.

We do not use browser fingerprinting, and campaign identifiers are not shared with Google Analytics or Microsoft Clarity.

Your control

Changing your mind

Rejecting or withdrawing optional measurement stops future collection and removes the site's optional attribution cookies. Browser settings can also block or delete storage. Blocking cookies does not trigger fingerprinting or another identification fallback.