How it works

Encrypted on your device. Split into fragments. Spread out.

Line drawing of a key and a padlock
Step 1

Your passphrase makes the key

The key is created on your device and never sent to us. Lose it and no one — including us — can open your files.

Line drawing of a square splitting into a grid of smaller squares
Step 2

Files are encrypted and split

Each file is encrypted, then split into fragments. A single fragment is unreadable noise.

Line drawing of computers connected to a central hub
Step 3

Fragments spread across machines

No machine ever gets enough fragments to rebuild your file, and none of them learn what it is.

Line drawing of fragments recombining into one document
Step 4

Rebuilt when you need it

Only some of the fragments are needed. Machines can go offline and your files still open.