One thing that we can agree on is that QR codes, which originated in Japan, have now reached most of the world, and are used, most probably, way beyond what the inventors at Denso Wave intended—the automotive industry.
SD Card module | RAK15002
The RAK15002 allows the usage of Micro SD cards as data storage medium. It can store a huge amount of data. As the card is removable, the collected data can be taken out of the module for analyze in another location.