Seal Hardware-Key Will Envelope — encrypted digital legacy for family

Use a hardware security key to seal passwords, photos, and voice notes for family to unlock after you pass

Problem

A developer on HN built Seal: an iOS app that lets users write an encrypted Envelope containing passwords, photos, and voice memos that loved ones open after they're gone. This reflects real anxiety about digital legacy—passwords are scattered, families don't know how to recover accounts, and existing password managers aren't designed for posthumous handoff.

Solution

An offline-first encrypted envelope app: package what you want to pass on, protect it with a hardware key or mnemonic, assign one or more heirs, and set unlock conditions such as multiple heirs present together or combined recovery keys. Include reminders and an optional dead-man's-switch release. The core is a simple, trustworthy encryption flow plus a recipient experience built for non-technical family members.

Users

Adults with family and digital assets, privacy-conscious technical users, and people who want estate planning without going through a law firm

MVP

Create an encrypted envelope with text and images; encrypt with a hardware key or mnemonic; assign 1–3 heirs; generate recipient unlock instructions; local-only storage with no cloud dependency

Revenue

One-time purchase or subscription by number of envelopes; white-label version for firms or law offices; premium features like multi-heir sharded unlock

Why now

Hardware keys are cheap, awareness of digital legacy is rising, and AI lets non-security experts implement a reliable encrypted packaging flow quickly