SCAN ME
Can you solve this scan puzzle?
It could be handy to hide messages

Inside this qr code is another one, just have to crop it

this qr code lead to a website : http://www.timesink.be/qrcode/flag.html
Then you get multiple bar codes to scan and eventually you get the flag.
flag : brixelCTF{m4st3r_0f_sc4n5}