Kiosk page

How to use it

1. 1Print the counter poster. Its QR code opens this page. You can also leave the page open on a tablet by the register, pinned so it cannot be closed.
2. 2A wrong number gets an answer on the tablet itself, with the format to use.
3. 3If somebody else just collected the stamps, the next customer reads “Those stamps were just collected. Please ask at the counter.” They are not offered a new card.
4. 4On a paired tablet, “N stamps are ready for you” appears within about a second of the counter pressing Ready. It goes when the counter cancels or the ten minutes run out.
5. 5An idle paired tablet asks our server for nothing. A browser that is not paired, or a shop not yet switched on, checks every four seconds.
6. 6The tablet shows the same code as the poster, beside the keypad, with the line “Or scan with your phone.”
7. 7A customer who scans it gets exactly what the poster gives, including the stamps you just made ready. A shop with a tablet does not have to print anything.
8. 8The code is 38mm across, like the printed counter card, and reads from about 40cm. The whole page, keypad included, fits without scrolling on 10-inch and 11-inch iPads, either way round.
9. 9Your kiosk line gets smaller as it gets longer, so it always fits. Up to about 34 characters it is full size. Past that it steps down once.
10. 10Past 45 characters it steps down again, and the tablet shows the first two lines, ending in …. A long line never pushes the keypad down or makes the page scroll.
11. 11Chinese and Japanese characters count double, because each is about twice as wide as a letter. Nothing you saved is shortened. Shorter is still better: customers read the first two lines.
12. 12Turned on its side, the tablet splits the screen into two equal halves, so the number box is never squeezed.
13. 13Sideways, the left half holds your shop name, your kiosk line and a big code, with “Or scan with your phone.” under it.
14. 14The right half holds what a customer touches, in order: the reward line, the stamps, the number box, the hint under it and the keypad.
15. 15Sideways, the keypad fills its half and lines up with the number box above it. The groups have space between them: the reward line, the stamps and number, and the keypad.
16. 16Held upright, the top shows your shop name, your kiosk line, the stamps and the number box, in the order a customer meets them.
17. 17Under them is one row: the code on the left, with “Or scan with your phone.” under it, and the keypad on the right. Nothing covers anything, and the keys stay still while a number is typed.
18. 18On a narrow tablet the keypad gets narrower before the code does.
19. 19The code is not shown on a customer’s own phone — they reached the page by scanning, and there is nothing for them to scan on the screen in their hand — and it is not shown on any phone-sized screen, for the same reason.
20. 20A new customer scans the code when staff say so and types their phone number. They get the stamps for the visit right away.
21. 21Without Ready for the next customer, on a tablet you have not paired, a new number is offered the card: “Welcome! Join the stamp card”, with name, email and birthday, and a Join button.
22. 22Under it, on your tablet, a line says staff can enter it for them. Nothing they type creates a customer. It goes on a short list at the counter, and staff press once.
23. 23A number already on your card reads “Hi again! Ask at the counter and they’ll add today’s stamp.”
24. 24Then the screen asks, once, for their name, email, the marketing yes and a birthday. Every field can be skipped. The email is how the review request and your offers reach them.
25. 25One line under the email box says what it is for. The address gets their stamp count after each visit, and a note when they earn or collect a reward. With the yes below, they also get reward reminders, offers and coupon codes.
26. 26In a language other than English, that line shows in English until the next translation round.
27. 27The kiosk asks for a birthday only when a birthday email will go: it is switched on, you wrote the treat, KANJIN can send email in your country, and you are on the paid plan.
28. 28Switch the birthday email off and the question goes. Birthdays already given are kept for when you switch it back on.
29. 29If Bring a friend (paid) is on, a new customer also sees a box for the phone number of the friend who sent them. The friend gets one stamp.
30. 30The screen says the same thing either way. After five numbers that cannot be credited, the box stops working for that customer. See Win-back, birthdays & referrals.
31. 31From 6 November 2026 a gentle hint appears under the email box for common slips, such as “Did you mean gmail.com?”, with a Use it button. It never stops anyone joining, and the customer can ignore it.
32. 32The yes box says your shop may email reward reminders, review requests, offers and news, a few a month at most, and that they can unsubscribe at any time. Under it is your contact email, or your postal address if you gave no email.
33. 33Each yes is saved with the exact sentence the customer read. The new English sentence has its own version, and yeses given before 6 November 2026 keep the sentence they saw.
34. 34It is in the language you chose for the kiosk.
35. 35If the join form cannot be saved, because the tablet is offline or the server refuses it, the screen says so and keeps what they typed. They can press Save again or hand the tablet back.
36. 36Their stamp is already given either way: the form comes after the stamp, never before it.
37. 37If you have it switched on, the screen offers one extra stamp for an email address — once per customer, ever. It is given for the address alone. Ticking the offers box earns nothing extra, and that is deliberate.
38. 38After the extra stamp, the screen says how many stamps are left to the next reward, counted from the card as it stands. From 6 November 2026 the line under the number adds: “Add an email on the next screen to hear about your stamps; tick yes for offers.”, so a customer is not led to expect offers without ticking yes. A number typed with a + shows in its own country’s grouping, for example +44 20 7946 0123.
39. 39A returning customer types their number the same way and gets their stamps at once. No sign-up again.
40. 40A number the shop’s country cannot read is told so on any tablet: “Numbers in Canada (+1) look like (604) 555-0123, or start with + for other countries.” A visitor taps the + key, which sits where Delete does while the box is empty, types their country code and number, and collects in any shop.
41. 41The screen then shows a code the customer can scan to keep their own card on their phone.
42. 42On the customer’s own phone, the page remembers their number for next time and shows “Same number as last time”. One tap collects the stamp. “Not you? Clear it” types a different number. The shop tablet never remembers anyone.
43. 43The tablet clears itself. After a stamp it goes back to the keypad in about twelve seconds.
44. 44If a customer leaves the join form part way, it clears a minute after their last touch. Each tap starts that minute again. Nobody in the queue sees the person before them.
45. 45The card QR, and the card link on a customer’s own phone, show only when the card is brand new, on the first visit.
46. 46A number that already has a card gets no card link, because the link is a lasting key to that card. Links customers already have in their email keep working.
47. 47A returning customer sees “Lost the link to your card?” and Email it to me. The link goes to the email on their card, never to the screen.
48. 48The screen answers the same whether or not we hold an email, so typing someone else’s number tells you nothing about them.
49. 49When the tenth stamp lands, the screen says the reward is earned and shows a code. The customer shows the code at the counter; staff type the number, see the reward waiting, and press Redeem.

What it does

• After a stamp, the screen hands the customer their own card, and how depends on whose device it is. On your paired tablet it is a QR code for them to scan with their own phone. On a phone that scanned your Counter poster it is a link to tap, because a code cannot be scanned by the screen it is drawn on. Never both, and never a link on your own tablet: the card page carries your Google review button, and Google asks shops not to set up review stations on the premises. The link was added in October 2026 — before it, somebody who joined by scanning your poster got their stamp and no way back to their card at all.
• A tablet gives stamps only after it is paired, from Settings, Tablet. There are two ways. Open the kiosk on another tablet: on any screen, press Copy the link or Show a code to scan, then open the link on the tablet or scan its code with the tablet’s camera, and press Connect this tablet. Use this screen as the kiosk: sign in on that tablet, open Kiosk tablets there, and press Use this screen as the kiosk. Nobody signs in on the tablet. The link works once, for 15 minutes; making a new one stops the old one, and a shop can make 5 in an hour. An owner or a manager can do either, and counter staff can when the owner has switched that on in Settings. Unpairing is the owner’s, in Settings, if the tablet leaves the shop.
• From 4 November 2026, right after it is paired, the tablet says “This tablet is set up and stays connected. Next time, just open your bookmark.” with two steps: bookmark the page or add it to the home screen, and that customers type their number and get their stamp straight away, with nothing to press at the counter first. Start the kiosk opens it. It stays connected for as long as it is used: every stamp request renews it. A tablet not used for 400 days stops being trusted, on our side as well as on the tablet.
• A tablet that was unpaired, or has not been used for 400 days, no longer shows the keypad. It shows “This tablet isn’t connected any more. Ask the owner or a manager to set it up again.” and a Set it up again link. A setup link that has expired or was already used opens a page that says “This setup link has expired or was already used. Make a new one in KANJIN: Settings, Tablet.” It pairs nothing.
• At the very bottom of the screen, on the free plan, one small grey line offers a free stamp card to a customer who runs a shop of their own. It is the only thing on the kiosk that is about us, and it is in the language the kiosk is set to. On the paid plan it is not there at all — the same setting that keeps our line off the bottom of your emails.
• You can try this exact screen before you set anything up, and so can anyone you show it to: open kanjin.app/try. It needs no account. Nothing typed there is sent or saved — it does the arithmetic in the browser and forgets it — so it is a safe thing to hand to a member of staff to practise on. On a wide screen it now shows the same two halves a tablet on its side shows, so what you practise on is the shape your staff will use. It does not show your code, because there is no shop behind that page.
• A customer scanning the poster on their own phone gets the stamp when you press Ready for the next customer at the counter, within ten minutes. Otherwise they are offered the card if their number is new to you, and greeted if it is not — on their own phone the sign-up is the same one, without the line about telling the staff, because they are typing it themselves. Until 28 October 2026 the screen said the same thing word for word either way, so that a stranger could not use the poster to find out whether a number was on your list. That is the one thing this change costs: whether a number is on your card can now be told apart from a number that is not. Nothing else about the customer is shown — no name, no stamps, no reward — and six tries an hour on any one number still applies.
• Nothing on this page is addressed to the shop, from 27 October 2026. Between 15 and 27 October it carried a second block under that sentence, headed “Shop owner? Nothing is broken”, explaining how to arm a sale or pair the tablet, with a button into Settings. It was put there because the owner met this screen, found nothing wrong and had nowhere to go — and it was still the wrong screen for it: this page is a tablet on a counter and a QR code on a poster, so almost everybody reading it is a customer, and the one person who needed those instructions was standing in their own shop with the back office a tap away. Both ways to give a stamp are explained on Stamp card & regulars now, under the Ready button. The button is gone too: it opened a page that was outside the back office.
• Until one of those two things is true, nobody joins your customer list from the tablet — the number waits at the counter instead. The link is public and printed on your poster, so a tablet nobody has set up must not add people to your list: somebody with a photograph of your poster could otherwise put thousands of numbers on it, and on the free plan those would count towards the customers you may email. A waiting number becomes a customer only when a member of staff presses Add the stamp.
• A waiting number is good for 24 hours and then goes. The promise on the kiosk is about today’s stamp, so a number nobody confirmed is a stamp that did not happen rather than a lead for next week. The same number typed twice is one line, not two.
• The screen shows a first initial, the stamps, and that a reward is waiting. It never shows the reward code; you see rewards waiting at the counter. The card link is shown only on a paired tablet, right after that customer’s own stamp.
• One stamp an hour per customer from the kiosk, counted from that customer’s last kiosk stamp. The rule is applied inside the database as the stamp is given, so two scans at the same moment earn one stamp. The counter can give more.
• A scan gives 1 stamp, unless the counter pressed Ready for the next customer with a different number.
• When the counter presses Ready for the next customer, the kiosk shows how many stamps are ready. The first number typed collects them, even if that customer was here earlier today.
• The same phone number counts once per hour on the kiosk. A second scan within the hour shows the card but adds nothing, so nobody can tap for free stamps. Staff at the counter are not limited this way.
• The page is public and needs no sign-in, because a customer is not a user of KANJIN. It knows which shop it is from the link alone.
• It shows the shop’s name, the big line and the reward you set on the Counter poster screen, in the language you set. It never shows other customers. Until you have set a reward it shows the big line and leaves the reward sentence out, rather than naming the stand-in one: from 25 October 2026, no customer is promised something you have not chosen. From 28 October 2026 a shop name too long for one line is drawn a size smaller and cut at one line with a … — the whole name is still shown on the thank-you screen after a stamp — and a reward written before the 35-character limit, if it is longer than that, is cut after three lines in the sentence that names it.
• Under the keypad it says the number is used only for this shop’s stamp card and is not sold or shared, with a link to the privacy notice. A customer handing over a phone number has to be told who is collecting it and what happens to it — that is the law in the UK, the EU and Australia, and it is also the difference between your QR code and a scam one.
• On the paid plan it also shows your logo above the headline, and uses your colour. Above, never instead of: the headline is the reason somebody hands over a phone number, and a logo is only who is asking. A shop with no logo set sees exactly what it saw before.
• Nothing is installed on the customer’s phone and nothing asks for permission. It is a web page.
• The keys are pale with dark numbers, from 30 October 2026. There are two ways to collect a stamp on a tablet on its side — scan the code, or type the number — and when the keys were dark grey on a dark screen a photograph of the tablet showed only the code. The keys are the same size and in the same place; they are simply visible from across a counter now. The Submit key is grey until the number is long enough and then turns blue.
• The page fits a phone screen: the keypad is smaller on a phone than on a tablet. On a small phone, about 568 pixels tall like an iPhone SE, the space above the keypad is tightened (from 28 October 2026) so the whole keypad, down to the Submit key, is on the screen without scrolling; the two small lines under it are a scroll away. The page still scrolls if a phone is shorter than that, or if your headline and reward take more lines than the shop it was measured on. The keys do not move while a number is typed.
• The extra stamp for an email is once per customer for good, and the card remembers it even if they come back in a year. It counts on their card and can complete a reward, but it is not counted as a visit anywhere: it does not appear in how busy your shop was, and it does not tell the win-back that somebody came in.
• A customer who gives an email but does not get the extra stamp is never shown an apology for it. They were offered it only if they could have it.
• If this shop is PAUSED — it is not your first shop and it is on the free plan — the kiosk still works and still shows a customer their card. They type their number, they see their stamps, and the screen says we cannot add a stamp right now and to ask at the counter. It does not mention plans or money: that is between you and us, not between you and your customer. Joining still works, and a reward already earned can still be redeemed at the counter. See Your shops.

Related screens