Event Ticketing Barcodes: From PDF to Mobile

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Barcode systems for event ticketing — PDF417 on paper tickets, Aztec in mobile wallets, anti-forgery measures, and gate scanning workflows.

Updated Apr 23, 2025

Event Ticketing Barcodes: From PDF to Mobile
Symbologies for Ticketing
Ticket Data Encoded
Anti-Forgery Measures
Gate Scanning Workflow
Mobile Ticketing
Print-at-Home Tickets
Capacity and Throughput Planning

Event Ticketing Barcodes: From PDF to Mobile

Event ticketing relies on barcodes for rapid, fraud-resistant entry management. From stadium gates processing thousands of attendees per hour to intimate venue check-ins, the barcode on a ticket is the critical link between purchase and admission.

Symbologies for Ticketing

Symbology	Use Case	Data Capacity
PDF417	Paper tickets, print-at-home	High (hundreds of characters)
Aztec Code	Mobile tickets, wallet passes	High, no quiet zone needed
QR Code	Mobile tickets, general use	High, universal scanning
Code 128	Simple ticket ID	Low (numeric or short alphanum)

Ticket Data Encoded

The barcode typically encodes:

Unique ticket ID (primary identifier)
Event code and date
Seat/section information
Ticket type (GA, VIP, etc.)
Digital signature or hash (anti-forgery)

Sensitive data (customer name, payment info) is stored server-side and retrieved by the ticket ID at scanning.

Anti-Forgery Measures

Measure	How It Works
Unique barcodes	Every ticket has a different barcode
Server validation	Gate scan verifies against the ticketing database in real-time
First-scan-wins	First person to scan a duplicated barcode gets in; copies are rejected
Digital signatures	Cryptographic hash in the barcode verifies authenticity offline
Rolling codes	Mobile tickets change the barcode periodically (prevents screenshots)

Gate Scanning Workflow

Attendee presents ticket (paper or phone screen)
Gate scanner reads the barcode
System checks: valid ticket, correct event, not already scanned
Green light/beep = admitted; red light/alert = denied
Turnstile or gate opens (automated) or attendant waves through (manual)

Target throughput: 15-25 people per minute per gate.

Mobile Ticketing

Mobile tickets displayed on smartphones:

Apple Wallet pass with Aztec or QR barcode
Google Wallet pass with QR barcode
Ticketing app with dynamic barcode (changes periodically)
Email/SMS with static QR code

Screen brightness must be maximized for reliable scanning. Modern gate scanners are designed to read from phone screens at various angles.

Print-at-Home Tickets

PDF417 is the traditional format for print-at-home tickets because:

High data capacity for detailed ticket information
Prints well on standard paper with consumer printers
Established scanning infrastructure at venues

Capacity and Throughput Planning

Venue Size	Gates Needed	Scanners per Gate
<1,000	2-4	1
1,000-10,000	4-8	1-2
10,000-50,000	8-20	2
>50,000	20+	2-4

Plan for 80% of attendees arriving in the 60 minutes before event start.