Proof of Display by Vojo
Not proof of play.Proof of display.
Most platforms bill when a player says it played your ad. We check every play against independent evidence first, and only bill for what we can prove.
One play, checked Example
- Player log, 14:07:10
- Played
- Evidence
- Confirmed on the glassScreen was off
You pay
Verified, so it's billed
Returned as credit
£0.08
A play log is a promise. A display is a fact.
The industry standard is the player reporting on itself. We check the play against independent evidence before anyone is billed.
Proof of play, the industry standard
- The device that plays the ad writes its own log
- A 'played' log can't tell if the screen was off, damaged or showing something else
- Verification is often a paid add-on, reconciled after your money is spent
- Disputes come down to your word against a log file
Proof of Display, on every screen on our map
- A separate sensor, the harvester, confirms what appeared on the glass
- A screen that's off or faulty fails the check instead of being logged as played
- Every play also gets a vTrust score, starting with the wrapped ad's own report
- Billing runs on confirmation: plays that don't pass are never charged
From booked slot to confirmed play.
Fully automated, on every single play, not a sampled audit after the fact.
Your ad plays
The screen's player renders your creative in its booked slot.
Evidence comes in
The wrapped ad reports when it rendered and the player logs the play. A harvester, where fitted, records the glass.
vTrust scores it
Vojo's vTrust engine turns that evidence into a trust score. Only plays that score high enough are confirmed.
Billed on confirmation
Confirmed plays are charged. Anything else goes back to your budget as credit.
What verification changes.
Advertisers
You never pay for a play that didn't happen
Unverified spend comes straight back as credit, automatically, with no dispute process.
Advertisers
Screen problems surface fast
Where a harvester is fitted, the sensor that confirms your ads also flags failing screens.
Screen owners
Proven screens get rebooked
Verification turns your screens into something buyers can trust with real budgets.
Both sides
One record of what ran
Owners and advertisers see the same confirmed numbers, with no reconciliation spreadsheets.
Built by Vojo.
vTrust scoring and harvesters are built by Vojo, a verification specialist. No play is confirmed on the player's log alone, and our billing only ever runs on what vTrust confirms.
The questions media buyers ask.
What's the difference between proof of play and proof of display?
Proof of play is a log from the media player saying it rendered your file — the device that plays the ad reporting on itself. Proof of Display goes further: a separate sensor, the harvester, confirms what actually appeared on the glass. Every play on Admitt, with or without a harvester, also gets a vTrust score: the wrapped ad reports when it rendered, and Vojo's engine turns the evidence into a score. A play log alone can't tell you if a screen was off, faulty or showing something else.
Is the verification really independent?
No play is confirmed on the player's own log. vTrust scores every play using evidence from the wrapped ad itself, and on screens with a harvester, from a sensor that is physically separate from the player and watches the screen. The technology is built by Vojo, a verification specialist, and you're only ever billed for plays that pass.
What happens when a display can't be verified?
You aren't charged for it. If a screen goes offline, playback fails, or a display can't be confirmed, that spend is automatically returned to your budget as credit. Verification isn't a report you reconcile afterwards — it's the thing your billing is built on.
Does Proof of Display cost extra?
No. Verification is built into every campaign on Admitt at no additional cost, and every screen you can book on our live map has a harvester. Other platforms treat verification as a premium add-on; we treat it as the baseline for charging you at all.
Which screens support Proof of Display?
Every screen with a harvester. That's every Admitt Frame and every screen you can book on our live map. Screens without one are still verified and given a vTrust score, but that can't confirm the glass. A harvester is free to add, and a screen needs one to appear on the map.
Stop paying for promises.
Launch a campaign where every play is checked before you're billed a penny, from £8 a day with no contracts.