Static signage
vs digital signage

Which turns the question into something far more useful: what is the one thing that has to survive a failure. Every business has a short list, and it is short — the opening hours, a phone number that reaches a human, where the exit is, and whatever the law says must be displayed. Those go on paper, permanently, no matter how good the screen is or how much it cost. Everything else is free to move. Framed that way the decision takes about two minutes and does not require comparing a single specification.

The list is boring, and its boringness is exactly the point. Look at what is on it and you will notice they are all things that do not change: the hours have been the same for four years, the number has not moved, the exit is still the exit. They were never a good use of a screen in the first place, because a screen earns its keep on what changes and costs you nothing but effort when it repeats. So the failure list and the print list turn out to be the same list, arrived at from two completely different directions — which is usually a sign that the reasoning is sound.

There is a practical version of this that takes ten minutes and almost nobody does. Print the short list once, properly, and put it somewhere it will still be readable if the room is dark and the screen is off — near the door, at eye level, not behind the till. Then forget about it for two years. It is the cheapest insurance in the building, it costs nothing to maintain because nothing on it changes, and the only day it matters is the day you would otherwise be standing at the door explaining the same sentence to everyone who walks up.

The version of this argument that gets made badly is "keep some posters, just in case". That produces a door with six laminated sheets on it, which is its own problem and a worse one. The useful version is specific: one list, decided deliberately, containing only what must survive. Everything not on it should come down — and most of it should not go on the screen either, which is a separate conversation and usually a shorter one than people expect.

To be straight about it: we sell the screen layer, so this is the paragraph where we argue against ourselves. We do it because the alternative — pretending a screen covers every case — is the thing that makes people distrust the rest of what we say, and because a business that has its failure list on the wall is a better customer than one that does not.

Paper's real advantage is not that it is cheap. It is that it goes everywhere at once. Eleven small notices in eleven places cost a few euros and no decisions. A screen goes in one place, and that place is chosen for visibility rather than for relevance — which is why it so often ends up replacing the largest of those eleven pieces of paper instead of the one that mattered.

So the useful question is not screen or paper. It is which of the eleven actually changes. The toilet door sign has not changed since the shop opened and never will: that one is print, forever, and no subscription should touch it. The card by the till changes with every promotion, is out of date more often than not, and is handwritten over the printed version half the time. That is the one worth putting on a screen — and if the answer to « which of them changes » is honestly « none of them », the comparison has already given its verdict, and it is not the one this page is selling.

Paper's amnesia is usually treated as a flaw. It is also a shield. Once the sheet is in the bin, what it said is a matter of two people's memory, and in practice that means the shop and the customer settle it at the counter like adults. A scheduled screen has a log: this item ran from the 3rd to the 11th, changed at 09:02, replaced by that one. That record is genuinely useful when a supplier asks whether their promotion actually ran, or when a customer says they were quoted something different and they were not. It is equally useful to the customer who says they were quoted something different and they were right.

Which is worth thinking about before it happens rather than after. If your prices change often and a mistake would be expensive — big-ticket items, regulated services, anything sold to businesses — the record is on your side more often than not, and it is one of the few concrete advantages of a screen that has nothing to do with looking modern. If what you display is closer to a suggestion than a commitment, it is a reason to be a little more careful about wording than you were on paper, because « we must have taken it down » stops being an available answer.

The practical version fits in one habit: before publishing anything with a number in it, read it as though someone will show it back to you in three weeks — because now they can.