Blog

Notes from building Lyfos.

Posts about the product, the engineering, and the strange, important business of building software for the worst day of someone's life.

Launch · 28 May 2026

We released a vault. On purpose. In public.

We ran our own death-recovery test end-to-end before opening signups. Here's exactly what happened — the timing, the alerts that fired, what almost broke, and what we learned about the 14-day hold.

Design · 24 May 2026

Why we don't ask your nominee for KYC.

Most "digital inheritance" services ask the nominee to upload an Aadhaar copy and a passport-size photo. We don't. Here's why we think KYC is the wrong layer of trust — and what we built instead.

Engineering · 20 May 2026

Zero-knowledge on mobile, without compromising.

How we got Argon2id, X25519, and Shamir's Secret Sharing to be wire-compatible between web and React Native — and why we chose pure-JS crypto over native modules.