camu on "[Plugin: WP SlimStat] do I need a custom filter for this?"

Hi there,

WP SlimStat already tracks that kind of URLs, so you technically don't need any "custom filter" to monitor those visits. You may use whatever URL params you like, maybe something like:

http://yourwebsite/target_page?fromqrcode

Then, in WP SlimStat, enable the filter where PERMALINK contains fromqrcode :) It's that easy, yes!

Camu