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