To be static or to be dynamic; that is the QR Code question
QR Codes are physical links to digital contents.
Static QR Codes encode the content directly, meaning that it cannot be updated or changed.
Dynamic QR Codes encode a unique short URL which works as a link to the content. You can update or change their type of content as many times as you want without having to reprint them. They also include statistical data.
If you want to know how to create a Dynamic or Static QR Code, check the following articles: