http://www.vivehypnosis.de/?p=5388
This little curse is an idea born in the patreon chat. Whenever someone draws a barcode onto your body, you will know that it marks you as an object. And not just any object, but their object. They own you, and that means that you have to obey them. You will also want to research bar codes to find the one that represents you the most.
Of course there are the normal safeties, and it only works if you allow them to use this trigger on you.