Terms of Service

Effective: March 30, 2026

Article 1 (Purpose)

These terms define the conditions, procedures, rights, and obligations for using the 2D:4D Test ("Service").

Article 2 (Service Description)

The Service is a free web service that uses AI (MediaPipe) to analyze palm photos, measure the 2D:4D finger ratio, and provide a hormone tendency type based on the results.

Article 3 (Service Usage)

• The service is free and available to anyone without registration • Users must not use others' photos without permission

Article 4 (Disclaimer)

• Results are based on a personality test inspired by scientific research and do not constitute medical diagnosis • Accuracy of results is not guaranteed and cannot be used as a basis for medical judgment • Results may vary depending on photo conditions, hand angle, etc.

Article 5 (Advertising)

The Service may include advertisements and recommendation links through affiliate programs such as Google AdSense and Coupang Partners. If a user purchases a product through a recommendation link, the Service operator may receive a commission as part of the Coupang Partners program. Responsibility for ad content lies with the respective advertisers.

Article 6 (Intellectual Property)

Copyright for the Service's design, code, and content belongs to the Service provider. Users may share their results for personal purposes.

Article 7 (Changes to Terms)

The Service provider may modify these terms as needed. Updated terms take effect upon notification within the Service.