Notes for owners · Business growth
How to measure offline advertising
A hoarding does not report. If you want a spot, a site or a cinema slide traced to an enquiry, the route has to be built before the campaign runs.
The GullySales team · Updated 15 Sept 2026 · 7 min read
Most offline advertising cannot be traced to an enquiry unless you build the route before the campaign runs. A hoarding has no click. A radio spot has no cookie. So the trace has to be printed or spoken into the creative itself. A separate phone number per site. A different QR code per location, a code word, and a short web address per medium. And one person at the counter whose job is to ask how people heard of you. Everything else is inference from a baseline you recorded first.
Say the honest thing first
An agency that promises full attribution on outdoor is selling you something that does not exist. Footfall data and impression estimates tell you how many people passed a site, not how many acted. A buyer who sees your hoarding on Monday searches your name on Thursday and enquires from Google, and every dashboard you own will credit Google.
That is not a reason to skip measurement. It is a reason to measure what can be measured honestly, and to be clear about the part that stays an estimate.
Five routes that work
| Route | What it catches | What it misses | Effort |
|---|---|---|---|
| A tracking number per site or creative | Calls made while looking at the advertisement | Anyone who searches your name later | Low, set up once |
| A distinct QR code per location | Scans from standing positions, with the location attached | Anyone driving past | Low |
| A code word or coupon | People who claim the offer at the counter | Everyone too shy to ask | Low, needs staff briefing |
| A short web address per medium | Typed visits, and everything after them on the site | Anyone who searches instead of typing | Medium |
| The question at the counter | The route nothing else sees | Whatever the customer misremembers | Medium, needs discipline |
Use two or three together. The phone number and the counter question are the pair that earn their keep in almost every business.
That counter question collapses if it is asked as an afterthought while a bill is being printed. Give it to one person, at one point in the visit, with a fixed list of answers written down. Google, Maps, the hoarding on which road, the pamphlet, a friend, the radio, walked past.
Do not offer "online" as an option, because it means nothing. Do not let the person filling the sheet guess. A fortnight of that question, logged properly, tells most small businesses more about their media than a year of dashboards.
The baseline is the real measurement
Before the campaign starts, record four numbers weekly: enquiries by source, walk-ins, orders, and the average value of an order. Then hold everything else still during the burst. Do not raise the Google Ads budget in the same fortnight as the hoardings go up.
Where you have more than one city or catchment, use one as a control. Run the outdoor in Hubballi and not in Belagavi, keep both digital budgets flat, and compare the movement. It is not laboratory science, and it is the closest a small business gets to knowing whether the medium did anything.
Time-stamped response for radio, television and cinema
Broadcast is measured on the clock. Get the telecast or transmission log from the station, then plot your calls and your website sessions in ten-minute blocks across the same days.
If the spot did anything, a small lift appears in the fifteen minutes after it, and it fades quickly. Look at the days with several spots against the days with none. A cinema slide is harder still. The audience is in a dark hall with the phone in a pocket, so a code word at your counter is the only honest signal.
An illustrative example
For example, a chain of four opticians in Mysuru books hoardings on three approach roads for two months, an insert in eight pin codes, and a radio schedule. The numbers here are invented.
Each hoarding carries its own phone number, forwarded to the main desk. The insert carries a fourth number and a coupon word. The radio spot carries a fifth. Every store logs the counter question for the whole period, and digital spend is frozen. At the end, two hoarding numbers have produced almost nothing while the one on the road past the hospital has produced steady calls. The insert coupon is redeemed in two pin codes of the eight. Next quarter's plan writes itself, and it is smaller and cheaper.
What the numbers will not tell you
Recall builds slowly and shows up as more people arriving who already know your name. Watch branded search volume and direct visits as a rough companion measure. If neither moves across a long outdoor campaign, that is a signal worth taking seriously.
Our marketing attribution work on offline media is mostly this unglamorous plumbing: the numbers, the codes, the counter sheet and a baseline recorded before anything runs.
What to do next
Before you sign the next media order, decide how each line on it will be traced and write that beside the cost. Any line with no answer is a line you are buying on faith, which is a legitimate choice as long as you make it knowingly. If you want the routes set up and a baseline recorded before your next campaign, book the free audit.