For most of advertising history, media has been traded on a relatively simple principle: how many people could you reach?
Television had viewers. Newspapers had circulation. Websites developed impressions. Out-of-Home advertising had audiences, reach and impacts. The measurements became more sophisticated, but the fundamental assumption remained largely the same. More exposure meant more media value.
JCDecaux is now taking a significant step towards a different model.
Working with attention measurement company Lumen Research, JCDecaux has developed an Attention Matrix designed to understand not simply whether people are likely to see individual Digital Out-of-Home screens, but how long those screens are actually looked at.
JCDecaux says the system allows it to rank digital advertising frames across the UK according to the attention they generate and gives advertisers the ability to plan OOH campaigns using attention metrics. Source: JCDecaux Changemakers.
It is important to make one distinction immediately. JCDecaux has not announced a new billing product officially called “Attention Trading” where advertisers simply purchase seconds of human attention. Campaigns are still largely bought using established audience and impression-based currencies.
But the direction is fascinating.
Because once individual advertising locations can be ranked according to how much attention they generate, attention stops being an abstract marketing concept and starts becoming something that can influence media planning, optimisation and, potentially, price.
We are getting remarkably close to trading attention.
The weakness in impression-based advertising is obvious when you think about your own behaviour.
Thousands of advertisements probably enter your field of view every week. You scroll past them, walk past them, skip them or simply fail to consciously notice them.
Technically, many of those advertisements generated an impression.
Psychologically, very little happened.
This discrepancy has become particularly problematic online, where advertisers can purchase enormous numbers of impressions while having limited understanding of how much genuine human attention those impressions generated.
Lumen Research approaches the problem differently.
Rather than simply asking whether an advertisement appeared, Lumen measures two important variables: the probability that someone actually looked at the advertisement and how long they looked at it.
Those numbers can then be combined into a metric called attentive seconds per thousand impressions.
Lumen describes the calculation as a combination of percentage viewing, average eyes-on dwell time and the number of impressions. Source: Lumen Research.
That allows different advertising formats to begin being compared according to the amount of human attention they actually generate, rather than simply how many times an advertisement was delivered.
That is a very different way of thinking about media.
The most interesting recent development came from JCDecaux’s work with Lumen in 2026.
Building on the existing Route audience measurement system, JCDecaux says it has gone beyond calculating the probability of a DOOH site being seen to understanding how long individual digital screens across different UK formats and environments are looked at.
The result is what JCDecaux calls its Attention Matrix.
According to JCDecaux, the matrix can rank digital frames around the country based on the attention they generate and allow advertisers to use that information during campaign planning. Source: JCDecaux Changemakers.
Consider what that means commercially.
Imagine two digital screens both deliver 500,000 audience impacts.
Traditionally, they might look relatively comparable in a media plan.
But imagine one screen generates an average of one second of attention while another generates three seconds.
Suddenly, those 500,000 impacts are not economically identical.
One environment may be generating substantially more actual human engagement than the other.
Once media buyers can see that difference, the inevitable next question is:
Should those impressions cost the same?
There is an important point in OOH’s favour here.
The industry has not simply been counting everyone who passes a billboard and calling them viewers.
Route, Britain’s Joint Industry Currency for Out-of-Home advertising, already describes its methodology as an attention-based currency.
Its audience measurement does not rely purely on Opportunity To See. Route applies visibility adjustments designed to estimate the Likelihood To See an advertisement.
The methodology incorporates more than 25 years of eye-tracking research and considers factors such as advertising size, distance, positioning and viewing angle when calculating the probability that someone passing through an area actually notices an advertisement. Source: Route.
Route says its data covers around 400,000 posters and screens across Great Britain and is used by the industry to plan and buy OOH campaigns. Source: Route.
So OOH already has a significant advantage over many digital impression metrics.
The next development is taking that visibility-adjusted audience and asking another question.
Not simply: Did they probably see it?
But: How long did they look?
That is where the idea of attention trading starts becoming genuinely interesting.
JCDecaux has already been experimenting with attention-led planning in airport advertising.
In June 2026 it launched Flightpath, following research conducted with Lumen Research and eye-tracking specialist Tobii.
The study found passengers spent an average of 47 seconds actively looking at Out-of-Home advertising while moving through the airport, representing around 10% of their total time in motion.
Research around full-departure-journey campaigns also reported 72% spontaneous advertising recall, a 31% uplift in message recall, a 9% uplift in brand perceptions and a 15% uplift in brand preference compared with a control group. Source: JCDecaux UK.
Flightpath uses those attention insights to help advertisers plan digital airport campaigns around different stages of the passenger journey.
But there is a particularly revealing sentence in JCDecaux’s announcement.
The company says Flightpath maximises opportunities to capture attention while still guaranteeing impressions.
That tells us exactly where the market currently stands.
The transaction is still largely based on impressions.
Attention is becoming the intelligence layer determining which impressions advertisers should want.
That may be an intermediate stage rather than the final destination.
Attention data becomes considerably more powerful when combined with programmatic advertising.
Programmatic DOOH allows digital outdoor inventory to be bought and activated using data and automated technology instead of every campaign being manually planned around fixed locations.
JCDecaux expanded its global programmatic DOOH offering in February 2026, covering more than 30,000 premium digital screens across airports, streets, transport networks and retail environments. Source: JCDecaux.
The commercial growth is significant too.
JCDecaux reported that programmatic advertising revenue through the VIOOH supply-side platform reached €102.8 million during the first half of 2026, growing 30.9% organically. Programmatic represented 12.3% of JCDecaux’s digital revenue during the period, while digital overall had grown to 42.8% of Group revenue. Source: JCDecaux.
Now combine those two developments.
JCDecaux has a growing programmatic infrastructure capable of trading tens of thousands of digital advertising screens globally.
It is simultaneously developing data capable of ranking screens according to the human attention they generate.
Put those together and the possibilities become obvious.
Instead of an advertiser simply asking for two million impressions among a particular audience, a future media plan could theoretically request two million impressions weighted towards locations that generate above-average attention.
Eventually, buyers could potentially optimise campaigns against metrics such as cost per attentive second rather than simply cost per thousand impressions.
JCDecaux has not announced such a trading model.
But much of the infrastructure required to make one possible is beginning to exist.
Lumen has already explored the economics behind this idea.
Traditional advertising often uses CPM, or cost per thousand impressions, to compare media prices.
But inexpensive impressions are not necessarily good value if very few people actually look at the advertisements.
Lumen has therefore proposed an attention-adjusted measure that effectively calculates the cost of buying a thousand seconds of human attention. Source: Lumen Research.
This exposes one of the biggest problems with impression-based advertising.
Not all impressions are equal.
One thousand impressions generated while people are actively looking at a large display in a physical environment are fundamentally different from one thousand advertisements loaded into the edges of webpages that users rapidly scroll past.
Yet conventional media metrics can make them appear deceptively similar.
Attention attempts to measure the difference.
Attention trading could also change how individual advertising locations are valued.
A premium site has traditionally commanded a premium price because of factors such as audience size, demographics, prestige, footfall and location.
Attention creates another measurable characteristic.
A screen in an environment where people naturally pause, wait or move slowly may generate substantially more attention than one passed rapidly in another environment.
The implication is important.
The advertising industry could gradually move from valuing a screen primarily because of where it is towards valuing it partly because of what people actually do when they encounter it.
The implications extend beyond individual outdoor screens.
Advertising channels compete for budgets.
Television competes with social media. Social media competes with search. Retail media competes with online display. OOH competes with all of them.
Historically, comparing their true value has been difficult because each medium uses different measurement systems.
This is one of the reasons the idea of attentive seconds is so interesting.
Human attention is theoretically media-neutral.
Whether someone is watching an advertisement on television, looking at their phone, staring at a digital billboard or standing in front of an interactive display, the underlying question is similar:
Did they look, and for how long?
Lumen believes a common attention currency could help advertisers compare fundamentally different forms of media on a more consistent basis. Source: Lumen Research.
If the advertising industry genuinely moves in that direction, some long-held assumptions about media value could be challenged.
The cheapest impression may not be the cheapest attention.
And the most expensive advertising format may not actually be expensive when measured according to the amount of genuine engagement it generates.
There is an obvious complication.
Attention is not generated by the advertising location alone.
Creative quality matters.
A brilliant advertisement could hold someone’s attention for considerably longer than a confusing or uninspiring advertisement displayed on exactly the same screen.
That means attention measurement has to distinguish between at least two variables:
the attention potential of the media environment and the attention generated by the creative itself.
Attention also does not automatically equal effectiveness.
Someone can stare at an advertisement without buying anything. They could look because they love it, because they hate it or because they cannot understand it.
Attention therefore cannot replace brand lift, recall, consideration, sales or other effectiveness metrics.
But without attention, most of those outcomes become considerably more difficult.
An advertisement that nobody notices has very little opportunity to influence anybody.
The move towards attention-based measurement could have another consequence.
It could make it easier to establish the commercial value of emerging physical advertising formats.
Traditional measurement can struggle to communicate the difference between an ordinary display and something genuinely unusual.
If 100,000 people pass a conventional digital screen and 100,000 people pass an immersive installation, the headline audience numbers may look almost identical.
But their behaviour around those displays may be completely different.
One format might receive brief glances.
Another might cause people to stop, watch, photograph it or interact with it.
That is particularly relevant to technologies such as 3D displays, interactive installations, experiential digital media and holographic displays.
The long-term commercial case for those formats cannot simply be that they are new.
Novelty eventually becomes familiar.
The stronger proposition is measurable performance.
If a new display format can independently demonstrate that it generates longer viewing times, a higher probability of attention, stronger recall or more attentive seconds than conventional media in comparable locations, attention-based planning creates a framework through which that advantage can be quantified.
For companies developing the next generation of physical media, that could be one of the most important consequences of this shift.
Possibly.
But we are not quite there yet.
JCDecaux’s 2026 announcement does not mean advertisers are currently buying packages containing exactly 500,000 seconds of guaranteed human attention.
What has happened is more subtle, and potentially more important.
Attention has moved another step closer to the trading layer.
JCDecaux can now use independent attention research alongside established Route audience data to understand which digital screens are likely to generate more attention and allow advertisers to incorporate those metrics into campaign planning.
At the same time, programmatic OOH is growing rapidly, creating increasingly sophisticated infrastructure through which individual pieces of advertising inventory can be selected and purchased.
Those two trends are beginning to converge.
And when measurement becomes good enough to distinguish between a low-attention impression and a high-attention impression, markets generally find ways to price the difference.
The advertising impression is unlikely to disappear.
It is simple, scalable and deeply embedded in the way global media is bought.
But its weaknesses are becoming increasingly obvious.
An impression tells an advertiser that an advertisement had an opportunity to exist in front of someone.
Attention begins to tell them whether anything happened afterwards.
JCDecaux’s Attention Matrix represents an important step in that evolution. Rather than treating every digital OOH impact as broadly equivalent, advertisers can increasingly understand the quality of the attention associated with different screens and environments.
Today, attention can influence planning.
Tomorrow, it could increasingly influence optimisation.
Eventually, it may influence price.
If that happens, the next generation of media trading will not simply ask:
How many people did we reach?
It will ask something far more valuable:
How much of their attention did we actually earn?