Rating:

This challenge is scan barcode and [QR code](https://www.qrcode.com/).
First scan QR code on upper right in the picture.
After that you scan code send answer.
I recommnd you should use barcode reader app on the smartphone.

Original writeup (https://312k.github.io/312k-blog/post/post6/brixelctf-312k-eng/#scan-me).