From flex to screen time. The advertiser's guide to DOOH in Bengaluru.

A flex hoarding sells one message for a month. It is printed, carried up, tied on and then left alone, whether the offer ended on Tuesday or the rain dulled the colours by Thursday. Screen time on an LED video wall sells something else: the right message at the hour your customer passes, changed from your phone. This is the advertiser's side of DOOH in Bengaluru: why you would move money from flex to screens, and how to plan and measure a campaign that earns it back.

What does a flex hoarding cost you beyond the rent?

A flex hoarding is honest media: one surface, one message, one price. The costs sit around it. Every change of message means a new print, a mounting crew and a few days of lead time. The creative can't respond to the weather, a cricket final or an item that has sold out. At night it needs its own lights. And one advertiser holds the face for the whole cycle, so a small brand either pays for the full month or isn't there at all.

None of that matters if your message never changes. For most retail, food and service businesses in the city, it changes every week.

Why move money from flex to screen time?

Change the creative instantly

New price, new menu, rain today: upload a new file, and it plays once the screen owner approves it. You can run two versions in alternate weeks and keep the one that brings more enquiries.

Buy the hours, not the month

Dayparting puts your spend where your customers are. A breakfast brand buys mornings, a pub buys evenings, a school buys admission season. The hours you don't buy cost you nothing.

Share the face

A screen carries several advertisers in a loop, so the way in is a slot, not the whole hoarding. That puts a single-outlet business on a screen at a junction it could never have rented as flex.

No print-and-mount cycle

There is no flex to print, transport and throw away, and no crew on a ladder for every change. The creative travels over the network. The screen lights itself at night and dims after dark so it doesn't glare. How a screen makes its own light, and why a moving picture gets noticed, is in LED display technology, explained.

How do you plan a DOOH campaign?

1. Start with the route. Where do your customers pass on a normal day? For a neighbourhood business, that is the few roads around the shop. For a B2B brand, it may be a tech-park lobby in Whitefield or Electronic City. Pick screens on that route, not the most famous screen in the city.
2. Choose the hours. Buy the dayparts when those customers are there and can act: on the way to work, at lunch, on the way home.
3. Set the frequency. Plays bought = plays per hour × hours a day × days. A 10-second slot in a 60-second loop, three hours a day for 14 days, is 2,520 plays on each screen.
4. Make it for the screen. The screen's own pixel size, one message, no sound, readable in three seconds. The DOOH explainer covers slots, loops and specs.
5. Start small, then move the money. Run two weeks on a few screens, read the numbers, then shift budget to the screens and hours that work. The marketplace lets you change screens and budgets mid-campaign.

Your budget is then the plays you want multiplied by each screen's rate per play, which the DOOH marketplace shows before you book.

How do you measure a DOOH campaign?

Measure two things separately: did the ad run, and did anything change at your end.

Delivery: did it run?

PxlOS logs every playback, and the marketplace dashboard shows play count, spend and delivery for each screen. Compare plays delivered with plays booked, screen by screen and hour by hour. On pay-per-play, you pay only for the plays that actually ran.

Effect: did it work?

This part you measure yourself, because no screen can see into your till.

• A different offer code or WhatsApp keyword for each screen, or each creative.
• A QR code only where people stand still, such as lobbies, lifts and bus shelters. Never on a road-facing screen.
• Walk-ins, calls and direction requests, compared with the same weeks before the campaign.
• One question at the counter: where did you see us?

What should you ask before you book a screen?

• A photo from the road, taken at the hour you plan to buy, from where your customers see it.
• Loop length, slot length and how many slots are sold.
• Operating hours and the night brightness schedule.
• Resolution and aspect ratio, so your creative fits.
• Proof of play by screen and by hour.
• What happens if the screen is down during your slot.
• Who approves the creative, and what content the owner won't carry.

When does a screen of your own make more sense?

If you advertise the same shop every day of the year, a screen at your own door may serve you better than slots elsewhere. Açaí Theory in Indiranagar put an outdoor P2.5 wall into its storefront, IP65 and auto-dimming, and changes its menu and offers from a phone through PxlOS. A 10 × 6 ft outdoor P4 wall costs about ₹3,56,500 + GST, controller included. A storefront screen can sell its own spare minutes too, which we cover in running a wall as a DOOH asset.

Where to go next

Flex made sense when changing a message meant a ladder. Now it takes a phone. Buy the hours your customers are on the road, count what comes back, and move the money to what works. The marketplace is the place to start.