Event voucher system
Event voucher system for single-use perks, drinks, and entry offers
Issue unique QR vouchers for events, then let staff validate them at the door, bar, booth, or venue. Reuse is blocked, and redemption data is available after the event.
One per attendee.
The problem
Why event vouchers break without validation
Event offers move quickly. Drink vouchers get screenshotted, sponsor perks get forwarded, and booth staff need a clear answer while a line is forming.
Without Coupon Carrier
- The same voucher gets shared between attendees
- Bar, booth, and door staff make manual calls
- Spreadsheets cannot update across busy redemption points
- Post-event reporting is incomplete or anecdotal
With Coupon Carrier
- Each attendee gets a unique voucher
- Staff scan or mark vouchers used on a phone
- Valid, used, expired, and unknown statuses are clear
- Redemptions are logged for post-event reporting
The redemption layer
A fast redemption flow for event staff
Coupon Carrier gives each attendee a voucher that can be shown from email, a wallet-style link, or a printed QR handout. Staff validate it in the browser and the voucher locks after use.
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
How the event voucher flow works
Two ways to verify
QR scanning for high-traffic redemption
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 status
Event staff see a clear status
Valid
The attendee can receive the drink, perk, entry offer, or sample.
Already Used
The voucher was redeemed earlier, so a screenshot or forwarded link should not be accepted.
Expired
The voucher window is over, which helps staff handle late attempts consistently.
Unknown Code
The QR code does not match the active event campaign.
Example campaign
Example: free drink voucher at a venue
Goal
Give each registered attendee one drink voucher without letting the voucher be reused at the bar.
Setup
Create a voucher campaign and send a unique QR voucher after event registration.
Customer flow
The attendee opens the email at the venue and shows the QR code to bar staff.
Staff flow
Staff scan the QR code with a phone. If the voucher is valid, they serve the drink and the voucher locks.
Result
The event team can see how many drink vouchers were issued, redeemed, unused, or blocked as already used.
Why it matters
Why not use paper drink tickets or a shared QR code?
Paper tickets and shared codes are familiar, but they leave too much trust at the redemption point. That is where event costs usually leak.
Paper tickets can be copied or passed around
A printed generic ticket does not know who it belongs to or whether it was used already.
Shared QR codes become public quickly
One screenshot can turn a controlled perk into an open offer.
Spreadsheets fail across busy staff teams
Multiple bars, booths, or doors need the same live status at the same time.
Who this is for
Events, venues, activations, and trade shows
- Organizers issuing free drink vouchers or food festival samples
- Venues managing entry perks, VIP upgrades, or merch discounts
- Brands running sponsor activation offers
- Trade show teams giving out booth rewards or lead-capture perks
Related use cases
Keep exploring real-world voucher redemption
Coupon validation system
See how valid, used, expired, and unknown-code states work.
Explore coupon validation systemQR code redemption system
Use a phone scanner for QR voucher redemption.
Explore qr code redemption systemSingle-use voucher system
Learn how one voucher per person prevents reuse.
Explore single-use voucher systemCommon questions
Questions teams ask before launch
Will this slow down staff at the door, bar, or booth?
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?
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.