# Seal: Digital Legacy Envelopes for the Deceased

> Seal lets you encrypt family secrets for after death without a server, using Apple's iCloud and phone-only keys
- Title: Seal: Digital Legacy Envelopes for the Deceased · GitHub
- Summary: Seal lets you encrypt family secrets for after death without a server, using Apple's iCloud and phone-only keys Seal stores encrypted family secrets on your…
- Keywords: seal, technology, startups, Digital, Legacy, Envelopes, Deceased, GitHub
- Source: GitHub — https://github.com/jasonepage/Seal
- Read time: 1 min
- Topics: seal, technology, startups
## What Seal Does
Seal encrypts letters, photos, voice messages, videos, and passwords for family members after you die without a server.
## How It Works
You add trusted contacts in person, create encrypted envelopes, and set rules for when they open after death.
## No Backend
All data stays on your phone; no server, no cloud storage, and no third-party services.
## Security Keys
Uses Apple's security keys and passkeys for identity without passwords or emails.
## Key Split
Splits encryption keys among trusted contacts so no single person can access all secrets.
## No Independent Audit
Has not been independently audited for security, though it passes basic design reviews.
## No Hardware Wallet
Does not store hardware wallet seeds, which require independent security checks.
## No Timestamp Lock
Uses a signed public record for timing but lacks a cryptographic time lock.
## Open Source
Released under Mozilla Public License 2.0 with no third-party dependencies.
## iOS Only
Requires iPhone or iPad running iOS 18 or later with no Android support.
## No Subscription
One-time purchase with no recurring fees for accessing sealed envelopes.
## Self-Verification
Users can verify sealed envelopes without trusting the app using a standalone Python script.
## No Reproducible Builds
Cannot prove the app was built from the source code without Apple's developer account.
## No Time Lock
Lacks a cryptographic time lock, so timing is handled through signed public records.
## No Independent Security Review
Has not been reviewed by an independent security team for vulnerabilities.
## Open Source Project
Single developer project with no company, funding, or investors.
## Key takeaway

Seal stores encrypted family secrets on your phone with no backend, opening only after you die with trusted contacts