QR Code & Barcode Blog Page 4 of 4
Guides, tutorials, and tips on QR codes, barcodes, and scanning technology — for businesses, developers, and everyday users.
How to Add a QR Code to Your Business Card (2026 Guide)
Build a vCard QR code for your business card and see the minimum print size it needs. Plus vCard vs link, placement, and the print specs that make it scan.
How to Scan QR Codes on iPhone & Android (2026 Guide)
Learn how to scan QR codes on any smartphone — iPhone, Android, and tablets. Covers built-in camera scanning, Google Lens, and third-party apps.
Static vs Dynamic QR Codes: Which Should You Use?
A dynamic QR code is a static code pointing at a redirect you rent. What that actually commits you to, what it costs over five years, and when it is worth it.
What is a QR Code? History, Types & How It Works
Learn what QR codes are, how they store data, the different types (static, dynamic, micro), error correction levels, and why QR codes are used everywhere today.
Types of Barcodes Explained: Every Common 1D and 2D Format Compared
Identify any barcode by its shape, then compare EAN-13, UPC-A, Code 128, Code 39, ITF-14, QR, Data Matrix, PDF417 and Aztec: capacity, error correction and use.
How to Create a WiFi QR Code (Step-by-Step Guide)
Android and iOS can hand you a QR code for the network you are already on, in about four taps. When that works, when it does not, and how to build one yourself.