Self Checkin is an open-source, privacy-first access control system that uses zero-knowledge proofs to verify user attributes (like age or identity) without exposing any personal data. It combines blockchain-based verifications with IoT hardware such as Arduino to grant or deny physical access—securely and seamlessly.
We are on a mission to reimagine access control by giving users complete privacy and security through cryptographic proofs—ensuring that verification doesn’t mean surveillance.
Traditional access control systems—whether at doors, clubs, events, or Airbnb rentals—require users to show physical IDs or share sensitive personal information. This creates privacy concerns, increases risk of identity theft, and exposes user data to unnecessary intermediaries.
Self Checkin solves this by integrating zero-knowledge proof (ZK) technology, allowing users to prove who they are or that they meet access conditions (e.g., being over 18) without revealing any raw data. The system validates this via a QR code scan on a mobile device and triggers a smart lock system powered by an Arduino board.
Just want it to build it as side gig
Global – especially useful in regions or industries where privacy, security, and seamless identity verification are critical (e.g., events, rentals, campus buildings, research labs, and private clubs).