A code for every place
Every surface below is printed once and read for years, and every one is a channel of its own. The argument is the same on each: the printed thing outlives what is behind it, so what is behind it must be editable, and a code per surface is how you learn which surface brings customers.
20 surfaces. Where a full guide exists, the card links to it.
Obligations and operations
The surfaces a Romanian venue is asked about this year. What changes on them is the thing behind the code: a menu, a password, a review platform, a phone number. The printed code should not.
Fiscal receipt
- What goes wrong
- The fiscal QR code comes from the register; a second code printed in the footer with a fixed link points at last season's offer forever.
- Where it goes
- The receipt's footer, where the register allows an image.
- Behind the code
- A Google review, a come-back coupon or the menu. The code the law requires is printed by the register; it is not a link.
- What a scan tells you
- How many paying customers scan, on the most-printed paper a venue owns.
Guest Wi-Fi
- What goes wrong
- A Wi-Fi code has the password in its pixels; the day the password changes, every printed card is dead until it is reprinted.
- Where it goes
- The counter card, the table, the room card in a guesthouse.
- Behind the code
- The card with the current password, made here.
- What a scan tells you
- How many guests connect, and from which room or table.
Google reviews
- What goes wrong
- The code sits on the table for years while the venue wants to steer it: Google now, its own form later, another platform in season.
- Where it goes
- The receipt, the table, the door on the way out.
- Behind the code
- The short review link from the Google business profile.
- What a scan tells you
- Which placement sends people to the review form, and how many actually go.
WhatsApp click-to-chat
- What goes wrong
- The number belongs to whoever answers this month; a code with the number in its pixels rings a phone that has moved on.
- Where it goes
- The shop window, the flyer, the delivery box.
- Behind the code
- The chat link with the number and the ready-written message.
- What a scan tells you
- Which surface starts conversations, and how many a week.
Print and advertising
Where this product started: the material is expensive to reprint and the link behind it is cheap to change. Each surface is also a channel, and a code per surface is how you learn which one brings customers.
Flyers
- What goes wrong
- Two thousand copies are boxed before anyone notices the link is wrong; a static code cannot be fixed after the box ships.
- Where it goes
- One code per distribution area, so the north side and the market read differently.
- Behind the code
- The site, the offer, an order form, WhatsApp.
- What a scan tells you
- Which neighbourhood scans, and whether the second print run was worth it.
Car decals
- What goes wrong
- The most expensive reprint on this list: a wrap costs more than every flyer put together, and the phone number on it changes first.
- Where it goes
- One code per vehicle, on the rear and the side.
- Behind the code
- The site, a quote form, WhatsApp, the booking page.
- What a scan tells you
- Which route brings enquiries, vehicle by vehicle.
Business cards
- What goes wrong
- The card outlives the job title, the number and the company; a code to a page you control keeps the card valid.
- Where it goes
- The back of the card, pointing at a contact page.
- Behind the code
- Your site, your LinkedIn profile or a one-page introduction.
- What a scan tells you
- How many of the cards you handed out were ever scanned.
Posters and events
- What goes wrong
- A poster in a bus shelter is read from three metres and stays up after the tickets sell out or the date moves.
- Where it goes
- One code per site, at a size the reading distance allows.
- Behind the code
- The ticket page, the sign-up form, the location on the map, the calendar.
- What a scan tells you
- Which sites are seen, not just where the posters went up.
Shop windows and street signs
- What goes wrong
- The window shows the opening hours, the catalogue and the promotion, and all three change while the vinyl stays.
- Where it goes
- At eye height on the glass, and on the sign above the door.
- Behind the code
- The opening hours, the catalogue, this week's promotion or the contact page.
- What a scan tells you
- Whether passers-by scan at all, and which window does the work.
Real-estate boards
- What goes wrong
- The board says for sale until the property is sold; the listing behind it changes price, photos and agent long before.
- Where it goes
- The board on the fence, with a code per property.
- Behind the code
- The listing, with today's price and photographs.
- What a scan tells you
- How many passers-by asked to see the listing, property by property.
Packaging and labels
- What goes wrong
- The print run is large and the instructions, the recipe and the certificate behind the code outlive the batch.
- Where it goes
- The label, with a code the product carries for its whole life.
- Behind the code
- The instructions, the recipe, the certificate or the product page.
- What a scan tells you
- Which product is looked up after the sale, and how often.
Delivery boxes
- What goes wrong
- The box reaches the customer at home, after the meal; the review link, the return coupon and the menu behind the code change monthly.
- Where it goes
- The lid, where it is seen when the box is opened.
- Behind the code
- The review link, a come-back coupon or the menu for the next order.
- What a scan tells you
- How many delivery customers come back through the box.
Conversion and the customer
Paper that asks for an action: a coupon, a form, an invitation, an invoice. The offer, the form and the payment page change more often than the paper is reprinted.
Coupons and offers
- What goes wrong
- The offer ends, the code on the coupon does not, and a static one keeps sending people to an expired page.
- Where it goes
- One code per shop, so shop A and shop B read separately.
- Behind the code
- The offer page, with its conditions and its current end date.
- What a scan tells you
- Which shop's coupons are redeemed, and how fast.
Feedback forms and surveys
- What goes wrong
- The questions change every quarter and the form tool changes every year; the code on the table cannot.
- Where it goes
- The table, the receipt, the waiting room.
- Behind the code
- The form in whichever tool you use this year.
- What a scan tells you
- How many opened the form against how many finished it.
Events and invitations
- What goes wrong
- The invitation is printed months ahead; the venue, the time and the confirmation form move in between.
- Where it goes
- The invitation, and the sign at the door on the day.
- Behind the code
- The confirmation form, the location on the map, the day's programme.
- What a scan tells you
- Who confirmed from the card and who from the door.
Invoices and PDF offers
- What goes wrong
- The payment page and the client portal move; a code printed on last year's invoices still has to open something.
- Where it goes
- The footer of the invoice, pointing at the payment page.
- Behind the code
- The payment page or the client portal.
- What a scan tells you
- How many clients pay from the paper rather than the email.
Content and identity
Objects that carry a person or a place: merchandise, a printed CV, a plaque on a trail. The object lasts years; the profile, the portfolio and the guide behind it do not.
CV and portfolio
- What goes wrong
- The printed CV is in a drawer for a year; the portfolio, the profile and the video behind the code are not.
- Where it goes
- The top corner of the printed CV.
- Behind the code
- The portfolio, the LinkedIn profile or a short introduction video.
- What a scan tells you
- Whether anyone opened the portfolio from the paper.
Tourism, museums and trails
- What goes wrong
- A plaque on a trail is installed for years; the audio guide and the map behind it are replaced every season.
- Where it goes
- The plaque at each point of interest, one code each.
- Behind the code
- The audio guide, the trail map or the site's page, in the visitor's language.
- What a scan tells you
- Which point on the trail is visited, and in which language.
The common thread
Different materials, one rule.
Every surface above has the same problem: something printed, hard or expensive to redo, that has to lead to something that changes. A dynamic code fixes exactly that mismatch. The paper is fixed; the link is alive.
How to choose
One code per place, not one per business.
The most common mistake: one code pasted everywhere. It works, and you learn nothing. If you have a flyer, a van and a menu, make three codes. It takes a minute, and from then on every material has its own numbers.
- Name each code after the place, not the business: “Flyer, north side”, “The white van”, “Table by the window”.
- They can all point at the same site. Every code counts its own scans, so you still learn where each one came from.
- The 3 free codes are enough for a small business. When you have more materials than codes, that is the sign Pro is worth it.