Digital signage
in United States

It is a convention rather than a rule about screens, and it has three practical consequences that show up immediately:

• Round numbers on screen are not round at the till. A menu board reading «$10» collects more than ten dollars, which is fine and expected — but it means the «everything under $10» framing that works elsewhere lands differently here.
• A chain across state lines cannot share a price screen without thinking. The same item, the same brand, two different totals. The displayed price can be identical; what cannot be shared is any claim about the final amount.
• Templates from abroad need reading twice. Anything that implies the number shown is the number paid was written for somewhere else, and it is the kind of detail nobody notices until a customer does.

The other thing worth saying plainly, because it affects how this site reads: the plans are billed in euros. Cards handle the conversion without anything to set up, and the amount on the statement moves slightly with the exchange rate. It is a small difference on a nine-euro plan and worth knowing rather than discovering on a statement.

Nothing else about running a screen changes here. The television, the player and the setup are the same everywhere — what differs is a pricing habit and a currency line, and both are decided once.

Four constraints follow directly, and none of them is about design taste:

• The decision window is under a minute. Anything requiring a second screen in a rotation will not be seen by the person currently deciding.
• Glare is the whole game. A windscreen adds its own reflection on top of the screen's. Matte content — light text on dark, no photographic backgrounds behind words — survives it; the reverse does not.
• The angle is fixed and known. Unlike a pavement, a lane puts every reader in almost the same spot. That is a rare gift: you can aim the layout at one position rather than compromise across many.
• Prices have to be complete. A seated customer cannot lean in to read the small print, and a figure that changes at the window is the fastest way to lose the next visit.

What works in this situation is close to road signage and nothing like a poster: few items, large type, one price per line, no motion. Movement in peripheral vision reads as urgency to someone driving, and it degrades the decision instead of helping it.

There is one advantage of the lane that is worth using deliberately: you know exactly how long the wait is. Two or three minutes of a captive, seated audience is longer attention than any pavement gives, and it is the one place where a second, slower message genuinely gets read — after the ordering decision, not before it.

Sit in a car at the spot where customers actually stop and look at your screen from there. Everything you cannot read from the driver's seat is decoration, and the seat is the only place that tells you which is which.