MalQR is a collection of malicious QR Codes & Barcodes you can use to test the security of your scanners.
It gives you the ability to conduct such tests with easiness: you just need to have a smartphone, a tablet or a laptop with internet connection and browse MalQR.shielder.it to have a large collection of common payloads.
MalQR is useful for lazy pentesters who just want to hack and don't waste time to regenerate each time those common payloads or remember to bring them on field during assessments.