“We also allege that in many cases both Woolworths and Coles had already planned to later place the products on a “prices dropped” or “down down” promotion before the price spike, and implemented the temporary price spike for the purpose of establishing a higher “was” price.
Pssst… products all already have scannable codes on them.
But yeah, Woolies rolled this out in a few of their stores last year. No need for dedicated hardware, the Woolies app does it. It took me a while to realise that actually it’s not yet available in very many stores. Just 16 in Qld, 20 in Vic, 32 in NSW, and 13 in the rest of the country combined. It just so happens that the two nearest to me are both on that list, so I got the impression that it was more common than it actually is.
But yeah, the tech does already exist as a whitelabel service. If I had to guess, I’d say Woolies rolled their own rather than using one of these, but other companies could do it without needing to do all the work themselves.