Stop putting QR code on your posters in the city.

ploum

I don’t have my phone with me.

When I have it, I don’t want to open it.

When it is open, I don’t want to scan random stuff.

Just put the information on the posters. The date, the place, the price. Write them !

Add an URL to your website. One I could memorize, note down or even recognize later.

And no instagram/facebook. I want the information, not "follow".

You are not cool, you are simply losing a huge part of your potential audience.