After restoring a backup on Note 4, I'm locked out of it via a pin. When using the pin that I remembered I set, it didn't work.
So, I'm left with no choice but to try and figure out how to remove it.
Instructions at MIUI didn't work.
So, I moved out these files from /data/system:
These didn't work, and it seemed the eventual files that helped unlock my Note 4 were moving away these files in /data/system:
In 2017, with the release of Delphi 10.2 Tokyo, Embarcadero introduced a specialized implementation of the Observer pattern into the System.Classes unit. While it has been in the wild for 9 years, it remains a "hidden" architecture for many, primarily because it serves as the invisible engine behind LiveBindings. Other than live bindings, you can also use the Observer pattern as a way to update component settings to the Windows registry, an .ini file, or persist it elsewhere.
System.Classes