Fig. 2.

Differential Use of QR code and Matrix code in the Indonesian track and trace system Traceability demands that codes be readable from the beginning until the end of their lifecycle. Both data matrix codes and QR codes are scalable, but small components such as electronic devices are typically marked with data matrix codes since they can encode more characters within the same space. Some markings have cells that are as small as 300 μm², whereas other markings are as large as a 1 m2. QR codes are less compact in size and are therefore not typically used for small items. In Indonesia the regulatory authority defined that 2D data Matrix is to be used for biologicals including vaccines, and other prescription drugs, instead of QR. Upon scanning with a smartphone the screen will show specific information and whether the product could be used or not, based on recognition from the integrated data system.