Trusted viewers

The list of apps a shared computer remembers, and how it gets filled.

A shared computer keeps a list of the apps it has admitted. It is a plain file, and the host window on Windows shows it.

~/.skylight/authorized_viewers    # the computer being shared
~/.skylight/known_hosts           # the app you connect from

How something gets on the list

In the default setup, by connecting. The coordinator vouches for a device on your account, the far computer admits it, and the pair is remembered so later connections are silent.

With the optional code check switched on, the app you are sitting at also shows 6 digits and waits for you to accept before it pins the far computer.

What it is not

It is not an approve-or-deny gate on the shared computer. Nothing on that side asks a person before letting a connection in, so removing an entry does not stop a device that is still on your account from connecting again.

To actually cut a device off, remove it in Devices. That revokes its enrolment, so the coordinator will not broker a connection for it again, whether or not the machine is online.

Clearing the list

Deleting the file makes the computer forget every pairing. Every device then re-pins on its next connection. Worth doing after a machine changes hands, and after you have removed the device from your account, which is the step that matters.