What this policy covers

This policy applies to Screen Detect at s.zzke.vip, operated by Hefei Kerdoo Technology Co., Ltd. It explains what information may be processed when you use the site, why it is used and the choices available to you.

Screen tests stay on your device

Dead-pixel, color, motion, refresh-rate, touch and device-metric tests are performed locally by your browser. The site does not take screenshots, record screen content, upload test images or require an account. Reports you create remain in your browser unless you choose to copy or export them.

Information we process

Necessary browser dataTheme, language and analytics-consent choices stored locally so the site remembers your preferences.
Optional analyticsPage views, approximate location, device/browser type and interactions such as scrolling or outbound clicks.
Server logsHosting systems may process IP address, requested URL, timestamp, user agent and error information for security and reliable delivery.

Please do not submit personal information through URLs or other fields. We do not sell personal information.

Optional analytics and cookies

If you select “Allow analytics,” the site loads Google Analytics 4 and Baidu Analytics. These services may use cookies or similar identifiers to measure visits and usage. We use aggregated reports to understand which tools are useful, detect errors and improve performance. Analytics remain disabled when you select “Necessary only.”

Where consent is required, consent is our legal basis for optional analytics. Necessary storage and limited security logs are used to provide and protect the service and support our legitimate interests in reliable operation.

You can allow or reject optional analytics without losing access to any screen test. Change your choice at any time:

Open cookie settings

You can also clear site data in your browser. Browser privacy controls, content blockers and “Do Not Track” signals may further limit third-party analytics.

Retention and international processing

Local preferences remain until you change them or clear browser storage. Hosting logs and analytics records are retained according to security needs and the configured retention periods of the relevant provider. Analytics providers may process information in countries outside your own and apply their contractual and legal safeguards.

Children’s privacy

Screen Detect is a general-purpose utility and is not directed to children under 13. We do not knowingly request or collect personal information from children.

Updates and contact

We may update this policy when the site, providers or legal requirements change. The effective date above will be revised for material updates. For privacy questions or requests, contact the operator through the Hefei Kerdoo Technology website.