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.
The problem
Why shared codes fail
A generic discount code is easy to launch, but it is also easy to copy. Once it reaches a group chat, a screenshot, or a public 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. That voucher can be shown on a phone, printed with a QR code, or sent through an automation tool.
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 reused. Every action is logged.
How it works
The same simple flow, from setup to redemption
Two ways to verify
Validate single-use vouchers with a tap or scan
Coupon Carrier supports two common in-person validation flows.
Mark-as-Used
Best when staff can tap the customer’s voucher page directly. Simple for restaurants, bars, retail counters, and small teams.
QR code scanning
Best when staff should validate from their own device. Useful for events, venues, busy lines, multi-location campaigns, and printed vouchers.
Voucher formats
Digital, QR, printed, form, and Zapier-triggered 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.
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, expired, 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 systemIn-store coupon redemption
Validate coupons in a physical location without changing the POS.
Explore in-store coupon redemptionRestaurant voucher system
Run free appetizer, dessert, coffee, birthday, and win-back offers.
Explore restaurant voucher systemCommon questions
Questions teams ask before launch
Do customers need an app?
Do staff need special hardware?
Does this require POS integration?
Can vouchers be reused?
Can we track who redeemed each voucher?
Can we use printed vouchers?
How fast can we launch?
Want to see the redemption flow yourself?
Send yourself a single-use test voucher, redeem it once, then try to redeem it again.
7-day free trial · 30-day money-back guarantee · In-person redemption, staff verification, and full tracking included.