> Documentation index: https://docs.kiste.run/llms.txt, a list of every page in this documentation.

# Device keys

> Every computer you sign in on gets its own SSH key, and all your Kisten accept all of them.

You never copy SSH keys around. Every computer you sign in on with
`kiste login` creates its own SSH key, stored only on that computer, and adds
its public half to your account. Every Kiste of your account accepts every one
of these **device keys**, including Kisten created before you signed in on that
computer.

```bash
kiste devices              # the computers signed in to your account
kiste devices remove ID    # remove one computer's key
```

## How keys reach your Kisten

kiste.run installs your account's current device keys into a Kiste when it is
created or resumed, and again before every SSH connection. A key you removed
stops working at the next of these. The keys live in a managed block of
`/root/.ssh/authorized_keys`; lines you add yourself outside that block are left
alone.

## Signing out

`kiste logout` revokes the computer's sign-in and removes its device key from
your account. `kiste logout --local` only forgets the sign-in on this computer,
for when kiste.run can't be reached; remove the key later with
`kiste devices remove`.

## Limits

An account can have 50 device keys ([L09](https://docs.kiste.run/errors/l.md#l09)). Browser sessions
never add keys; only a CLI sign-in does.

## A lost computer

Remove its key with `kiste devices remove ID` from any other signed-in computer, and
end its sign-in in the console or with [sign out everywhere](https://docs.kiste.run/account/sessions.md#sign-out-everywhere).

## Related topics

- [Overview](https://docs.kiste.run/ssh.md)
- [Copy files](https://docs.kiste.run/ssh/files.md)
- [Port forwarding](https://docs.kiste.run/ssh/forward.md)
- [SSH configuration and editors](https://docs.kiste.run/ssh/ssh-config.md)
- [Run commands](https://docs.kiste.run/ssh/commands.md)
- [Coding agents and credentials](https://docs.kiste.run/ssh/agents.md)
- [Browser terminal](https://docs.kiste.run/ssh/browser-terminal.md)
- Previous: [SSH configuration and editors](https://docs.kiste.run/ssh/ssh-config.md)
- Next: [Run commands](https://docs.kiste.run/ssh/commands.md)