How is your freedom reduced tho, an app produces a yes or no, how is that a reduction of freedom. Search for zero-knowledge proof and the techniques behind it Sources for ZKP: ageverification.dev/…/annex-B-zkp/ en.wikipedia.org/…/Elliptic_Curve_Digital_Signatu… Vulnerabilities: www.encryptionconsulting.com/…/what-is-ecdsa/ [Api2025] Rutchathon Chairattana-Apirom, Franklin Harding, Anna Lysyanskaya, and Stefano Tessaro, “Server-Aided Anonymous Credentials,” available at eprint.iacr.org/2025/513, 2025