Single-use voucher system

Single-use voucher system for offers that cannot be reused

Give each recipient their own voucher, then lock it after the first redemption. It works for email, QR, printed, in-store, and event campaigns without POS integration or custom development.

Try a demo voucher See live demo
✓ VALID OFFER
20% Off Your Order
Valid for 7 more days
WK3-P7N-4M2
Unique to you. One-time use only.
Mark as Used
Reuse blocked
This code was already redeemed. A screenshot of it won’t work either.

The problem

Why shared codes fail

A generic discount code is easy to launch, but it is also easy to copy. Once it lands in a group chat or on a coupon site, staff have no reliable way to know who should still be allowed to redeem it.

Without Coupon Carrier

  • Everyone uses the same code
  • Screenshots and forwarded links keep working
  • Staff cannot tell whether this customer already redeemed
  • Campaign reporting stops at distribution, not real use

With Coupon Carrier

  • One voucher per person
  • Each voucher has its own redemption record
  • Reuse is blocked after the first redemption
  • Digital and printed redemptions can be tracked

The redemption layer

One recipient, one voucher, one redemption record

Coupon Carrier assigns a unique voucher to each recipient. The customer can show it on a phone or bring it printed with a QR code, and you can send it by email, a signup form, Zapier, or as a voucher link you share yourself in WhatsApp, Instagram DMs, or chat.

Coupon Carrier gives each customer a unique voucher link or QR code. At redemption, staff either tap Mark as Used or scan the QR code. Once redeemed, the voucher is locked and cannot be used again, and the redemption is recorded.

01 Create offer
02 Send or print unique vouchers
03 Validate at point of use
04 Track redemptions

How it works

The same simple flow, from setup to redemption

01
Create or import unique codes
02
Deliver vouchers by email, form, Zapier, print, or a link you send
03
Customer shows voucher
04
Staff validates with Mark-as-Used or QR scanning
05
Code is locked and recorded
Try a demo voucher See the full redemption flow →

Two ways to verify

Validate single-use vouchers with a tap or scan

Coupon Carrier supports two common in-person validation flows.

1

Mark-as-Used

Best when staff can tap the customer’s voucher page directly. Simple for restaurants, bars, retail counters, and small teams.

Customer shows voucher Staff taps button Used
Compare Mark-as-Used and scanning →
2

QR code scanning

Best when staff should validate from their own device. Useful for events, venues, busy lines, multi-location campaigns, and printed vouchers.

Customer shows QR Staff scans Result
See the QR code redemption system →

Voucher formats

Digital, QR, printed, form, Zapier-triggered, and manually shared vouchers

Email voucher

Send a personal voucher link through your email platform or Coupon Carrier delivery.

QR code voucher

Let staff scan the customer’s code from their own browser-based scanner.

Printable voucher

Export print-ready vouchers with a unique code or QR code on each one.

Signup form voucher

Show or send a unique voucher after someone joins a list or completes a form.

Zapier-triggered voucher

Assign vouchers when a form, purchase, tag, or registration happens in another tool.

Manually shared voucher

Generate a personal short voucher link and send it yourself in WhatsApp, Instagram DMs, email, or chat.

Example campaign

Example: multi-channel campaign

Goal

Run one offer across email, flyers, and event handouts without letting the same voucher work twice.

Setup

Import or generate unique voucher codes, then send some by email and export a print-ready QR batch for offline distribution.

Customer flow

Each customer receives one personal voucher. They can show it on a phone or bring the printed version with them.

Staff flow

Staff scan the QR code or tap Mark-as-Used, then apply the offer if the voucher is valid.

Result

The voucher locks after redemption, and the campaign report shows which vouchers were issued, redeemed, or unused.

Why it matters

Why not just use a generic discount code?

Generic codes are fine for low-risk online offers. They are a poor fit when every redemption has a cost, staff need proof, or the offer can be copied.

Paper coupons can be duplicated

A static paper coupon does not know whether it has already been used.

Spreadsheets lag behind the counter

A shared sheet is easy to miss during service and usually updates after the fact.

POS work can slow down launch

Coupon Carrier sits outside the POS. Staff verify the voucher separately, then apply the discount as usual.

Who this is for

Teams that need one valid redemption per person

  • Marketing teams running offers with a real cost attached
  • Retailers and service businesses that need in-person redemption control
  • Event teams issuing perks, drink tickets, samples, or upgrades
  • Agencies managing client promotions across channels

Related use cases

Keep exploring real-world voucher redemption

Event voucher system

Issue single-use QR vouchers for drinks, perks, sponsor offers, and venue redemption.

Explore event voucher system

In-store coupon redemption

Validate coupons in a physical location without changing the POS.

Explore in-store coupon redemption

Restaurant voucher system

Run free appetizer, dessert, coffee, birthday, and win-back offers.

Explore restaurant voucher system

Common questions

Questions teams ask before launch

Do customers need an app?
No. Customers open the voucher link in a browser or show a printed voucher with a QR code.
Do staff need special hardware?
No. Staff can use a phone, tablet, or computer. QR scanning runs in a modern mobile browser.
Does this require POS integration?
No. Coupon Carrier acts as the redemption layer. Staff validate the voucher separately and apply the discount in the POS if needed.
Can vouchers be reused?
No. Once a voucher is redeemed, it is marked as used and future attempts show that it has already been redeemed.
Can we track who redeemed each voucher?
Yes. Coupon Carrier keeps a redemption record for each assigned voucher, including status and redemption timing. If each staff member or location has its own scanner login, reports show which login redeemed each voucher.
Can we use printed vouchers?
Yes. You can create print-ready batches where every printed voucher has its own unique code or QR code.
How do we get started?
Sign up, create a campaign, and import or generate your codes. There is no onboarding call, POS project, app install, or scanner hardware to set up, so you can test the redemption flow yourself before you brief staff.

Want to see the redemption flow yourself?

Try a demo voucher for your business. Mark it as used, then open it again to check its status.

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7-day free trial · 30-day money-back guarantee · In-person redemption, staff verification, and full tracking included.