The question always comes late. The cellar has been cleared and someone is missing a bike, the deadline for the meter reading has passed, the water was off for an afternoon and one household says they knew nothing about it. At that point what counts is not whether people were informed but whether it can be shown.
With paper it cannot be shown. A notice carries no record of when it hung, at most a date somebody wrote on it. When it came down nobody knows, and whether it hung the whole time is unknown too.
What can be evidenced at all
Not that anyone read it. No notice and no screen can do that, and whoever promises it is promising what a registered letter delivers and nothing else.
What can be evidenced is that the information was available, and from when to when. That is exactly what paper lacks, and exactly the point where a dispute otherwise tips over.
What the screen contributes
When a notice is entered, you set when it appears and how long it stays. The period is fixed before anyone asks about it, and it lives in the portal rather than in someone’s memory.
The second contribution is more mundane and matters more day to day: the notice really is up the whole time. It does not get papered over, torn down, or slip behind the glass. A notice half the building never saw is worth little even with a date on it.
What the screen does not do
It keeps no log today of what was displayed on which day. Anyone who needs complete documentation for a dispute will not get it here, and we would rather say so beforehand than afterwards.
For the cases where it really matters the route stays what it was: a written notice to the household concerned, delivered verifiably. The screen does not replace that. It prevents the many cases before it.