[cgriswald]

I think the solution has a more fundamental flaw. Reasons why people are no longer logged in:

1. The website timed them out.

2. They pressed “log out.”

3. They/their browser deleted their cookies.

4. They are on a different device.

5. They are in private/incognito mode in a new tab or window (say after clicking a link to confirm their email address at signup).

To the extent the solution works at all it only works for (1) and (2).