Quick answer
The most common event QR code is a unique URL per attendee that serves a personalized ticket page. When scanned at the door, the URL serves a personalized ticket with the attendee's name, seat, and event details, plus a scannable QR code for the check-in system. Beyond tickets, events use QR codes for vCard exchange on badges, post-event feedback surveys, live polls during sessions, schedule/program access, and drink or merchandise payments. The same QR code stays valid from sale to check-in to follow-up.
7 ways events use QR codes
1. Digital tickets (the standard)
Every modern ticketing platform (Eventbrite, Ticketmaster, Dice, Resident Advisor) issues digital tickets with a unique QR code. Attendees receive the ticket by email or app, present it at the door, and the check-in scanner reads the code in under a second. This eliminates paper tickets, reduces fraud, and gives you real-time attendance data.
2. Contactless check-in
Use a dedicated event check-in app (Eventbrite Organizer, Ticket Tailor, or a hardware 2D scanner) at the entrance. The camera reads the code, marks the ticket as used, and prevents duplicate entry. For 500+ attendee events, hardware scanners (about $100-200) are 5-10x faster than phone cameras.
3. vCard badges for networking
Print a vCard QR code on every attendee badge. Scanning it saves the person's contact details, title, company, and email directly to your phone. Replace hundreds of business cards at conferences, trade shows, and meetups. Use QRBuilt's free vCard generator to create these from your event registration data.
4. Schedule and program access
Place a single QR code on the entry signage that links to a mobile-friendly schedule page. Attendees bookmark it and check session times, room locations, and speaker bios throughout the day. Update the page in real time when sessions move or get added.
5. Live polls and Q&A
Display a QR code on screen during a session that links to a live polling tool (Slido, Mentimeter, Poll Everywhere). Attendees scan to submit answers, vote, or ask questions - dramatically increasing audience engagement.
6. Post-event feedback surveys
Send attendees a follow-up email the day after with a QR code linking to a 3-question feedback survey. Surveys completed via QR have a 3-5x higher response rate than emailed link-only surveys because scanning is faster than typing URLs.
7. Cashless payments for drinks and merchandise
At festivals and large events, attendees link a payment method to their wristband or app via QR. They then pay for drinks and merchandise with a tap. Examples: Coachella's RFID wristbands, Tomorrowland's Tomorrowland Cash, many music festivals use similar systems.
QR code size by use case
| Use case | Viewing distance | Minimum size |
|---|---|---|
| Phone ticket (digital) | 10-30 cm | 2 x 2 cm on screen |
| Printed ticket | 30-60 cm | 3 x 3 cm |
| Badge for networking | 10-20 cm | 1.5 x 1.5 cm |
| Wristband / lanyard | 5-10 cm | 1 x 1 cm (need 30% EC) |
| Event signage (entry/exit) | 1-3 meters | 8 x 8 cm |
| Stage display (live poll) | 5-30 meters | 15-30 cm |
Tip: For outdoor events, increase error correction to level Q (25%) or H (30%). Codes get splashed, scuffed, and crumpled. Higher error correction keeps them scannable for longer.
5 best practices for event QR codes
- Use a unique code per ticket, not a shared code. The shared-code approach lets one ticket be used by multiple people. Unique per-attendee codes prevent fraud and enable accurate check-in counts.
- Test the full attendee journey before the event. Buy a test ticket, scan it with your check-in app, walk through the entrance flow, and confirm the whole path works. Do this 2 weeks before, not 30 minutes before.
- Have a manual backup process for failed scans. Always have a printed guest list or a search-by-name function in your check-in app. Some attendees will have cracked screens, low battery, or printing issues.
- Brief your check-in staff on the QR scan process. Staff should know how to handle common issues: code won't scan (rotate phone, increase brightness, type attendee name), wrong ticket (polite redirect to ticket office), VIP list (separate line).
- Track scan data, not just check-in counts. Most event platforms record scan time, entry door, and check-in staff. This data reveals entry bottlenecks and helps plan future events.
How to scan QR codes at events
For small events under 100 attendees, a phone with a check-in app is enough. For larger events, use hardware:
- Phone-based check-in (under 200 attendees): Install the check-in app (Eventbrite Organizer, Ticket Tailor, or your ticketing platform's app) on staff phones. Free, fast setup, but slower than hardware.
- Tablet-based check-in (200-1000 attendees): Use a dedicated iPad or Android tablet with the check-in app open in fullscreen. Larger screen, faster scanning, battery lasts longer than phones.
- Hardware scanner (1000+ attendees): Buy a dedicated 2D barcode scanner ($100-200) that connects via Bluetooth to a phone or tablet. Scans codes in 0.1 seconds - 5-10x faster than phone cameras. Examples: Honeywell Voyager, Datalogic QuickScan.
- Self-service kiosks (5000+ attendees): Tablet mounted on a stand with the check-in app in self-service mode. Attendees scan their own ticket, the door opens (with motorized gate) or staff confirms. Cuts check-in time by 50-70%.
Static vs dynamic QR codes for events
Most event QR codes are dynamic (redirect-based) because:
- Each attendee needs a unique code (cannot be pre-generated)
- Codes often need to update the destination (event details, room changes)
- Check-in needs to validate against a real-time ticket database
- Scan analytics help optimize entry flow
Static codes are useful for events in different ways: the "schedule" QR code on entry signage (never changes), the "feedback survey" code on the closing screen (same for all attendees), the "WiFi" code on the venue wall. These are perfect for QRBuilt's free static generator.
Frequently asked questions
How do events use QR codes?
Events use QR codes for digital tickets (email or app-based), contactless check-in (scanning at the door), networking via vCard exchange, feedback surveys, live polls, schedule/program access, payment for drinks or merchandise, and social media follow-ups. QR codes have largely replaced paper tickets for most event types since COVID-19.
What size should a QR code ticket be?
For digital tickets on a phone screen viewed from 10-30 cm, the QR code should be at least 2 x 2 cm on the screen. For printed tickets or badges viewed from 30-60 cm at the check-in desk, use at least 3 x 3 cm. For large outdoor events with crowd scanning, use 4-5 cm. The code should use error correction level Q or H to handle crumpling or screen damage.
What is the best QR code for event tickets?
Use a URL QR code linking to a unique ticket URL per attendee. The URL serves a personalized ticket page that displays the attendee's name, seat, event details, and a QR code for check-in. This pattern is used by Eventbrite, Ticketmaster, and most modern ticketing platforms. The QR code on the ticket is what the check-in scanner reads, while the URL behind it serves the human-readable details.
How do you scan QR codes at event check-in?
Use a dedicated event check-in app (like Eventbrite Organizer, Ticket Tailor, or Checkin Apps) on a staff member's phone or a dedicated tablet. The camera reads the QR code in under a second, marks the ticket as used, and prevents double-entry. For high-volume events, use a 2D barcode scanner (hardware, ~$100-200) for faster scanning than a phone camera.
Can QR codes replace paper tickets?
Yes, completely. Major ticketing platforms (Eventbrite, Ticketmaster, Dice, Resident Advisor) all default to digital tickets with QR codes. Paper tickets are now rare except for high-end events where physical keepsakes are valued. The benefits: no lost tickets, no fraud, automatic check-in, real-time attendance data, and lower printing costs.
What is the best QR code type for event badges?
Use a vCard QR code on attendee badges. Scanning it saves the person's contact details directly to your phone - perfect for networking at conferences, trade shows, and meetups. For larger events, some organizers use a dynamic QR code that links to the attendee's personal profile page on the event's app or website.
How accurate is QR check-in?
Very accurate when set up correctly. Modern QR check-in apps use the camera and Reed-Solomon error correction to handle damaged codes. Issues usually come from: (1) screen too dim or cracked - ask attendees to increase brightness; (2) code partially covered by a phone case sticker; (3) wrong mode - some apps need a specific 'scan' mode. With a healthy code on a working phone, scan success is 99%+ in good lighting.
Generate event QR codes
Use QRBuilt to create the static QR codes for your event: schedule, WiFi, feedback survey, social media. 100% free, no sign-up, no data upload. For dynamic per-attendee tickets, integrate with your ticketing platform's API.
Generate Event QR Codes