this post was submitted on 07 May 2026
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Electronic shelf labels are surprisingly easy to hack.

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[–] cheat700000007@lemmy.world 5 points 6 days ago (1 children)
[–] Grass@sh.itjust.works 1 points 6 days ago

If you change only the price and keep the same barcode, editing the e-tag will almost certainly work, but it's the other way around.

Just set the item to be a buck or two lower and when it scans you just say that it was less than that where you grabbed it from. They will probably call someone to go bring the tag and a supervisor will key in to change the item price and subtract the price up to a maximum of $10 off the tag price. This was a loblaw example because rob loblaw month is every month, but the specific way it shows up on receipt may vary across different companies.