A digital dead man’s switch

You choose
what continues.

Seal your passwords, keys, instructions, and final messages. If you ever stop checking in, Capsulene delivers them — encrypted end-to-end — to the people you trust, exactly when it should.

End-to-end encrypted · Zero-knowledge · No card required to start

A Capsulene key capsule
See it work

See how a Capsule works.

Seal what matters, stay in rhythm, and — only if your check-ins ever stop — it reaches the right person. Here’s the whole idea in under a minute.

🔊 Click for sound
01

Seal what matters

Encrypted end-to-end on your device.

02

Stay in rhythm

Simple periodic check-ins keep it dormant.

03

Silence is verified

Grace periods and reminders before anything moves.

04

Delivered — only then

The right people receive exactly what you left.

Use cases

What are you preparing for?

One continuity layer, many lives. Capsulene fits wherever losing access would cost someone dearly.

Founders & Operators

Your company should not depend on one person being available forever.

Crypto Holders

Ownership without continuity is unfinished security.

Families & Individuals

Your family should not have to search through chaos.

Future Self / Timed Messages

Some things are meant for later.

Advisors & Wealth Managers

Help clients prepare digital continuity without becoming a custodial risk.

Platforms & API Partners

Embed continuity into products people already trust.

How it works

A clear path forward.

Six deliberate steps. You stay in control the whole time you’re here.

Choose what matters

Passwords, keys, instructions, or a final message — whatever should not be lost.

Create a Capsule

Seal it. Key material is encrypted end-to-end, client-side, before it ever leaves your device.

Add context

Explain what it is and why it matters, so a recipient actually understands it.

Choose a recipient

Name who should receive it, and how they’ll be reached.

Set conditions

A dead-man check-in cadence with grace periods — you stay in control while you’re here.

Activate

If you ever stop confirming you’re around, Capsulene delivers — exactly when it should.

Security

Split apart before it ever leaves your device.

Key material is encrypted client-side and split so no single party — including us — can reconstruct it.

AES-256-GCM envelope encryption

Every secret is sealed with authenticated encryption before it leaves your browser.

Shamir's Secret Sharing · 2-of-3

The key is split into three shares; no single party — including us — can reconstruct it alone.

Zero-knowledge by design

We store ciphertext and one share. We can never read your capsule’s contents.

Works even if Capsulene disappears

Your files can be opened offline with the shares — no dependency on us being around.

Pricing

Simple, honest pricing.

Start free. Upgrade to a package when you need more capsules active at once.

Free

Basic continuity, at no cost.

€0
  • 2 standard capsules active at once
  • 1 advanced (key-holder) capsule active at once
  • Dead-man check-ins & grace periods
  • End-to-end-encrypted key vaults
Get started free
FAQ

Frequently asked questions

Is Capsulene a file storage platform?

No. Capsulene is a continuity layer: it seals secrets and instructions and delivers them to the people you choose if you stop checking in. You keep storing files wherever you already do.

What if Capsulene disappears — can my files still be opened?

Yes. Encrypted files are opened with the key shares, entirely offline. There is a downloadable offline decryptor, so access never depends on us still being here.

What happens if I miss a confirmation?

Nothing sudden. Missing a check-in starts a grace period with repeated reminders. Only after that window fully lapses does delivery begin — you are always given time to return.

How is my account itself protected?

Passwordless email sign-in, optional authenticator-app 2FA, single-use recovery codes, and a soft-delete grace period on account deletion so nothing is destroyed by mistake.

How does billing work?

Start free. Upgrade to a package when you need more capsules active at once. Stripe is the merchant of record — it handles cards, tax, and invoices; no card data touches us.

Do not leave what matters to uncertainty.

Set it up once. Stay in rhythm. If your check-ins ever stop, the right people get exactly what you left them.

Get started free