How to prevent for user logged in twice (to different browser or machines)

Need Help
1

In my System user logged in over combobox with cakephp 4.4.11 and db Session and apcu as well.
I try for days to prevent user not to logged in twice at the same time on different systems.
Did somebody got a fine solution or do I have to reinvent the wheel?

Thanks in advanced
Michael

2

I found a solution. Thanks anyway.

3

Could you share your solution in case it might help others?