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Solutions by typeMobility analysis

How many people come in through each door, and when?

You know how many came in. Not where.

Saturday, ten past six in the evening. The mall forecourt has two doors. Through the big glass one, a stream that never breaks. Through the small one on the left, almost nobody: two people in ten minutes. Inside, the units facing that door have been empty all afternoon. At closing time the centre will have one figure: how many came in. One figure, for the whole building.

8 cameras across 7 sectors

This is how you ask for it

«Tell me how many people come in through each door and when, and alert me if one stops counting while the centre is open.»

That figure does not help much. A total at closing time cannot tell you whether the small door is dead all day or only on Saturdays, or whether the left-hand mall fills up when the bus arrives. And those two things drive decisions that cost money: where the promotion goes, how many staff each shift needs, what rent a unit can carry and which one is being overpaid.

You decide once

You decide this once. You say where the counting line goes on each door, which way counts as in, what the opening hours are and how long without a count should trigger an alert. IRIS draws the number every day, on every door and every shift, with nobody having to remember to look. If a new door opens, you add its line and everything else stays as it was.

Counting is not something you ask IRIS for in a sentence. A line cannot be described in words: it has to be drawn. So this camera is not set up by saying what to look for, but by drawing where people walk. You trace a line across each doorway, you say which way counts as coming in, and from then on the number is always the same number: repeatable, comparable from one Saturday to the next, and auditable if anyone questions it.

That changes the conversation. Saturday stops being «it was busy» and becomes two curves: the big door climbing from eleven, the small one flat all afternoon. Whoever negotiates a unit’s rent no longer argues from impressions, they show the footfall past that door hour by hour. And the floor manager finds out that the peak hour is not the one they assumed, and moves staff where they are actually needed.

The alert comes after, and it is simple. If a door stops counting people while the centre is open, it almost never means nobody is coming: it means the door is shut, or the lift beside it has stopped, or building work is blocking the way. That used to show up in a report on Monday. Now it shows up while it is happening, when the door can still be opened.

What changes

Before, someone stood with a hand clicker two days a year and the rest was an estimate. Or you looked at average spend and assumed the rest. Now footfall through every door is counted every day and every hour, with nobody counting anything. Whoever builds the Saturday rota looks at last week’s curve instead of remembering how it went.

Where we have seen it

  • The same boarding concourse, now looking at the unit on the right: a convenience shop open to the walkway, with no door and its shelves facing the flow. In front of it the steady stream of people heading for the gates crosses, and one passenger walks right along the shopfront looking at the goods without stopping. IRIS counts how many people walk past and how many stop in the strip of floor next to the unit, and how long they stay. It does not know whether they went in and does not know whether they bought anything: the operator's till says that.

    CAM-590Two thousand four hundred pass, two hundred and sixty stop

    «Tell me if footfall past the unit rises for two hours running and the number of people stopping does not rise with it.»

    See this cameraAirports

  • The crest of a dam late in the afternoon. Somebody is going over the mesh gate that closes the way through: both hands on the top rail and one leg already on the other side. Beside it, the control hut with its green steel door, the red no-entry sign wired to the gate leaf and the barrier on the track. Nobody else is in shot. IRIS sees that someone has crossed a closed barrier; it does not know who they are and does not try to find out.

    CAM-144Someone climbs the gate onto the dam crest

    «Tell me the moment anyone climbs over the fence onto the crest, at any hour, and tell me which camera and where they got in.»

    See this cameraCritical infrastructure

  • Saturday afternoon. The entrance plaza has two doors: the big glazed one, two storeys high, and a smaller one on the left. The big one takes a steady stream that never breaks; the small one takes the odd person. A family crosses the plaza, a couple arrives at the corner and someone is resting on the planter bench. IRIS counts how many people cross each door, at what time, and how many are on the plaza at any moment. It counts bodies, not people with names: it recognises no faces.

    CAM-535How many people come in through each door, and when

    «Tell me if one of the two doors stops adding people while the centre is open.»

    See this cameraShopping centres

  • Mid-afternoon on the quarry haul road, dust in the air. A loaded red truck is coming head-on down the left lane, and the arrow painted on that lane points the other way. The blue signs on the verge set the direction of each lane. On the right, a yellow dump truck loaded with rock is running as it should. A wheel loader is working further back. IRIS sees which lane each vehicle is in and where it is heading, and compares that with the marked direction.

    CAM-387A truck coming head-on down the wrong lane

    «Tell me the moment a truck enters the haul road the wrong way, and show me where it came in.»

    See this cameraIndustry

  • The outer service road and the razor-wire wall, from a high camera. A quadcopter is crossing the sky above the wall, its camera hanging underneath. Below, on the road, a service vehicle is stopped and three people in uniform are standing there; two of them are pointing upwards. On the other side of the wall is the yard, with people and a basketball hoop at the far end. IRIS watches that piece of sky all the time, including when nobody is looking at it.

    CAM-110A drone over the wall

    «Tell me if something appears flying over the wall or the yard, and tell me where it came in and which way it is heading.»

    See this cameraThe prison

  • The junction seen from the pole on the embankment: one car is merging in from the entry slip road, another is leaving by the exit, and between them lies the painted hatched area of the diverge.

    CAM-69Slip roads in and out

    «Tell me if a vehicle stops inside the hatched area or if someone enters by the exit the wrong way.»

    See this cameraThe motorway

  • A fenced building site in the middle of the city, seen from above. At the corner of the timber hoarding a person is halfway up: one foot against the boards, both hands on the top edge. Inside you can see the debris skip, the churned-up ground and, further back, two workers in helmets and hi-vis. IRIS sees that a person is crossing the fence; it does not know who they are.

    CAM-57Someone climbing the site fence

    «Tell me if someone climbs the fence or gets in where nobody is meant to, whatever time it is, and show me the camera so I know where they came through.»

    See this cameraThe building site

  • Shopping Saturday, midday light. On the left, rows of cars in the surface car park; in the foreground, a car with its door open and a family getting out. A group crosses at the pedestrian crossing and carries on across the forecourt towards the main entrance, glazed, on the right. Another family walks back to the car with bags. IRIS counts how many people cross, how many go in through the door and how many cars use the lane. All in aggregate: no number plates are read here.

    CAM-540How many get out of the car and which door they end up using

    «Tell me how many people come in through the main door for each car that arrives at the car park.»

    See this cameraShopping centres

What it does not do

This counts people, not customers. IRIS does not know who comes in, does not recognise faces and cannot tell that the same person came in twice: that is two crossings. It does not know whether the person crossing the line came to shop or to cut through to the car park, and it will not know. The number says how many went past. What that footfall is worth is a business call, not a camera’s.

Questions

Does this identify the people coming in?
No. IRIS does not recognise faces, keeps no record of anyone and does not know whether the person crossing the line has been there before. What it does is add one when someone crosses in the entry direction and subtract one when they cross the other way. All that comes out is a number per hour and per door. If the same person goes in and out three times, the counter sees three crossings, not one repeated person: you need to know that when reading the figure, which is why we say it before you ask.
Why draw a line instead of just asking for it in a sentence?
Because a line cannot be described in words. Asking is for finding; counting is for measuring, and they are not done the same way. If you say «count the people coming in the main entrance», nobody knows where the main entrance begins or at exactly what point someone counts as having entered. Drawing the line on the image fixes it for good, and that is why the number can be repeated tomorrow, compared with last Saturday and defended in front of whoever audits it.
Is the figure any use for negotiating a unit’s rent?
Yes, and it is one of the most requested uses. Footfall past a door, counted hour by hour and day by day, is the figure you argue value with. It stops being the landlord’s opinion against the tenant’s. The same line shows whether footfall rises during a campaign and whether the people who stop rise with it, which does not always happen: there are malls where plenty walk past and nobody stops. That contrast is what decides it.
What if we open a new door or move an entrance?
You draw another line and it is counting. No turnstiles, no floor mats, no sensors in the frame: the count comes from the camera already looking at that spot. If a door closes for building work, its curve goes to zero, and that is the signal that something is up, not a fault. And if the entrance moves three metres, you move the line. What you cannot do is move it every week and then compare months: the line moves rarely, because its whole value is that it does not move.

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And the best part

By the eighth hour of a shiftnobody watches the way they did in the first. That is not a flaw.

It is being human. A camera has no eighth hour: at four in the morning it understands what it understood at noon, and it speaks up just the same.

Tell us your problem and we will say whether IRIS understands it, or not yet.

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