I agree that the rule is silly but I think they're tracking purchases to enforce it. The one time I tried to shop at a pot store I couldn't get in because my state ID card had expired. I was told they need ID to enforce purchase limits. I don't like the idea of being tracked and they don't do that at state liquor stores, except for checking to see if you're old enough to buy -- not a problem for me since I'm old. I think a lot of this control freaking will go away as Oregon gets used to legal pot. Right now they need the illusion of control. I do want control over content, making sure it's free of pesticides and mold, one of the benefits of legalization.