# tmux_identity:fingerprint/0

- **Package:** libtmux_erlang
- **Language:** Erlang
- **Kind:** typealias
- **Source:** https://github.com/libtmux/libtmux-erlang/blob/d1b6308440cf9eb8f6647e7ae434bce60e849368/apps/libtmux_erlang/src/tmux_identity.erl#L38
- **Page:** https://libtmux.org/en/erlang/latest/reference/t-tmux_identity-fingerprint-0/

```
-type fingerprint() :: binary().
```

Versioned SHA-256 comparison key for a captured Linux process incarnation. The linux-v1 prefix identifies the canonical encoding, independent of Erlang term serialization. Keys compare identity observations, not endpoint ownership or current liveness. They are identifiers, not authentication tokens.