A QR code is a 2-dimensional barcode. They are squares filled with black and white blocks invented to keep track of cars during manufacturing.
A more in-depth guide about what is a QR code and is it safe.
A QR code is a 2-dimensional barcode. They are squares filled with black and white blocks invented to keep track of cars during manufacturing.
A more in-depth guide about what is a QR code and is it safe.