What happened as the EU entry&exit borders scheme finally took effect?

The European Union’s entry-exit system (EES) for British passport holders, as well as other “third-country nationals”, begins on Sunday 12 October.

What happened as the EU entry&exit borders scheme finally took effect?
The European Union’s entry-exit system (EES) for British passport holders, as well as other “third-country nationals”, begins on Sunday 12 October.