reading the signal…
Signals / Object / Mapped places
in Milan, 25·counted·524 all time
A business accepting debit cards displays card-payment signs or uses a card reader at checkout.
Counted, not streamed: Accepts Debit Cards has no time series, so it is read as a footprint across places. All-time count by city.
Things that physically exist: street furniture, signs, buildings. All-time counts.