QR code redemption system

QR Code Coupon Redemption System for In-Store Use

Staff scan a QR code with their phone camera and see the result instantly — valid, already used, or expired. No app to download. No hardware to buy.

Free Coffee
Show this QR code to the barista
at the counter to claim your free
coffee. One per customer.
Scanned & redeemed
Staff scanned this code just now.

Why unique codes matter

A shared QR code is just a flyer with extra steps.

If everyone gets the same code, anyone can screenshot it, drop it in a group chat, and use it over and over. Your staff can't stop it.

STATIC CODESame code, no trackingUNIQUE CODES1 code per person, tracked

Coupon Carrier generates a unique QR code for every recipient. Each one can only be scanned and redeemed once. That’s what makes in-store promotions actually trackable.

What staff see after scanning

Three possible outcomes. All instant.

Staff scan the code and get the answer right away. No waiting, no lookups, no guesswork.

✓ Valid

Free Appetizer

Valid until Apr 30, 2026

Mark as Used

This offer hasn’t been used yet. Staff taps the button to redeem it on the spot.

✗ Already Used

Free Appetizer

Used Mar 15 at 2:34 PM

Already Redeemed

Someone already used this code. Could be a screenshot, a forwarded link, or a second attempt.

Expired

Free Appetizer

Expired Mar 10, 2026

Offer Expired

The expiry date has passed. No action needed — the code can’t be redeemed.

Zero hardware required

Your staff already have everything they need.

The scanner runs in a web browser. If your staff have a phone with a camera, you’re set.

Any phone works

Staff open the scanner page in their browser. iPhone, Android — doesn’t matter. If the phone has a camera, it works.

No app to install

The scanner is a web page, not an app. No downloads, no updates, no App Store approval. Open the link and scan.

No dedicated scanners

Forget barcode guns or tablets. A phone camera is all you need. No procurement, no IT tickets.

Getting codes to customers

Distribute QR codes however you like.

Coupon Carrier connects to the tools you already use. Each customer gets their own unique code.

Email integrations

Connect Mailchimp, Klaviyo, HubSpot, or any email platform. Codes get inserted automatically when you send a campaign.

Signup forms

Trigger a unique voucher when someone fills out a form. Works with embedded forms, pop-ups, or landing pages.

Print batches

Export a batch of unique QR codes as images. Use them on postcards, flyers, or packaging — each one still single-use and trackable.

Read the full guide: How to distribute QR code coupons.

Simpler alternative

Don’t need scanning? There’s a simpler option.

Most teams start with Mark as Used — a button on the customer’s phone. The customer shows their voucher, staff taps one button, done. No scanning required.

QR scanning adds a layer of control for higher-volume locations or when you want staff to initiate the redemption. Both methods prevent reuse and track every event.

Compare Mark as Used vs. QR scanning

See QR scanning in action.

Test the full flow — from receiving a voucher to scanning and redeeming it. Takes about two minutes.

Start free trial Try a live voucher

7-day free trial · 30-day money-back guarantee · See pricing · Guided demo