What a linked device actually is
A linked device is a client attached to your account, not a separate public profile. Signal keeps that distinction visible in the app.
Signal lists linked devices in Signal Settings under Linked devices. Source
That matters when a machine is about to leave your hands. If the device was linked, it may hold a copy of message history rather than just an app icon.
A linked device can synchronize chats and media from the primary mobile device when linking. Source
So the question before selling, sharing or retiring a computer is not “did I log out?” but “is this machine still on my linked-device list?”
Linked client vs. public profile
A linked client is a private session tied to your account. A public profile is a handle others can find. They are different surfaces, and a public handle search cannot see the first one.
| Question | Linked-device list | Public handle search |
|---|---|---|
| Shows private sessions? | Yes, for your own account | No |
| Shows public handles? | No | Yes, where a handle is public |
| Can it prove who owns an account? | No | No — matches are leads, not proof |
| Useful before retiring a computer? | Yes, for your own devices | Only as a separate public-footprint check |
Self-review checklist
- Open Signal on your primary phone and read the linked-device list in Settings.
- Compare each entry against the computer you are retiring. Remove the ones you no longer control using the app’s own controls.
- Do not assume that signing out of a desktop app removes it from the list; check the list itself.
- Keep a recovery method you control until any account closure is finished.
- Separately, review your own known public handles. TraceSeek can check 3,000+ platforms in 20-30 seconds, with a free first scan; it does not change platform settings, see private sessions or verify identity.
For the public-handle side, see find forgotten online accounts and our methodology.
Honest limits
A username search is not a complete account inventory. Public matches are leads, not proof of ownership, and matching photos or biographies cannot independently prove identity. The linked-device list is the right tool for private sessions; a public search is not a substitute for it.
Key facts
Signal lists linked devices in Signal Settings under Linked devices.
A linked device can synchronize chats and media from the primary mobile device when linking.
TraceSeek covers 3,000+ platforms and states a scan time of 20-30 seconds with a free first scan.
Public username matches are leads, not proof of ownership.