You can easily scan QR codes that are already on your phone

Android and iOS both have built-in tools to easily open QR codes from screenshots.
Android Police

QR codes: Everything to know about the machine-readable code

I am an author and features writer at Android Police. I primarily writes guides, how-tos, and roundups on the latest smartphone apps and features for Android Police since joining the team in early ...
ZDNet

Quishing is the new phishing: Why you need to think before you scan that QR code

I wore the world's first HDR10 smart glasses TCL's new E Ink tablet beats the Remarkable and Kindle Anker's new charger is one of the most unique I've ever seen Best laptop cooling pads Best flip ...

QR Codes Aren’t the Problem. What Happens After the Scan is

QR codes are the moment where trust is tested, and results are captured or lost.
Business Insider

What is a QR code? A guide to the barcode's basics, why you're seeing it everywhere, and how to scan one

You've probably noticed a square barcode pasted to a graffitied light pole or on the back of a business card. That pixelated code, shaped in a square, is called a QR ...