Your devices

Adding a device

Install Iceblock on the new device, and open it.
On a device already in your network, go to Devices, then Add a device.
If the new device is on the same Wi-Fi, it’s listed under Nearby: tap it. Otherwise, tap Show an invitation, and scan its QR code with the new device, or open its link there.
The new device asks whether to join. Check that the fingerprint it shows matches the one on the device that invited it, then approve it there.

An invitation works for a few minutes, and for one device. If you didn’t just start adding a device yourself, don’t use one.

A device that has files of its own can still join another network: it brings its files with it (Join another network, bringing this one…, in the menu on My network, on the Devices tab).

What a device may do

Each device has a trust level:

Full: reads and changes everything. Your own phone and computers.
Metadata only: sees file names, but not what’s in them.
Storage: holds encrypted pieces of files for the others, and can read none of it. Good for a computer you don’t control.

You can lower a device’s trust on My network, on the Devices tab: open its card, and tap the ⋮ in its corner. Changing trust and removing a device ask you to confirm it’s you: on Android with your fingerprint (or face, where your phone treats it as secure) or your screen lock, and on Linux with your password, in your desktop’s prompt. Letting a device in, and bringing another network into yours, ask the same, on both devices for a merge.

When a device is lost or stolen

Remove it: it stops syncing, and new files are hidden from it.
Mark compromised if someone else may have it: it’s removed now, and wiped when it next connects, after 3 days unless someone cancels.
Re-key the network afterwards, from the menu on My network, so that nothing it still holds can be read with keys it had.