Ikea should stop 'banning' them and embracing these. They should build a ticket platform so you can only get into the game w/a ticket. You'd put an armband on signifying you're a 'player'. That way they could maybe limit it to a smaller number per game.. 3000 seems like a lot. Maybe 500 or less. How many of these people would shop while there are go to the cafeteria?
We were at Ikea today and I thought - they should have a "lazer" game where you try to get as many tags as possible. Players would be required to walk, you could only tag someone once and they could have tags on furniture [or only on furniture] that encouraged kids to "catch them all" ensuring the parents visited a particular room or item that Ikea wanted to sell.
Maybe ...
MVP would be just have some of the barcodes with a different colour background and give people barcode readers "capture 30 tags and get an icecream"; improves engagement, keeps kids interested in the "hunt"??