This is why I alway bring a street urchin with me when I shop for groceries. I make sure he has a cellphone & wifi enabled. We carefully walk down the aisle side by side and the e-ink price tags start flashing. They usually settle on a price that's halfway between the personalized price for him and I.

There are a lot of positive outcomes from this technology: more revenue in the pocket of the family who own's Canada's biggest grocer & REIT, and a deeper relationship with the neighbourhood vagabonds for me.