AbsentKey: Digital Legacy Vault

A zero-knowledge encrypted vault built for one purpose: making sure your passwords, files, and private information reach the right people at the right time. Store secrets, assign trusted recipients, and set a waiting period between 1 and 365 days for each person. When a recipient requests access, the owner gets notified and can approve or deny instantly. If there's no response before the timer runs out, access opens automatically. Unlike dead man's switch apps that demand daily check-ins, AbsentKey only activates when someone actually requests access. All data is encrypted on-device using libsodium (XSalsa20-Poly1305) with X25519 key exchange. Encryption keys never leave the phone, and the server stores only ciphertext. Use cases range from family password sharing and crypto inheritance to encrypted file vaults and digital wills. The mobile app source code is publicly available on GitHub. Available on iOS and Android.