QR codes can carry various types of data, from URLs to PDFs to phone numbers. In the IoT ecosystem, QR codes can work as a bridge between users and IoT devices.

With cases of QR code fraud starting to pop up and some officials warning consumers to take pause, you may be wondering if it ...

How much data can a QR code store, and how does it work? QR codes encode numeric, alphanumeric, byte/binary data, and Kanji characters. They can store up to 2953 bytes of data.

Once the QR code has been scanned and has become active, malicious JavaScript can then simulate login portals, exfiltrate data via hidden forms and fingerprint devices for further exploitation.