Wow. I wonder if that's sustained, or just brief spikes, like during pasteurization. If they can sustain ~100 C, then perhaps you could even put them in the PCB of a CPU.
Tracking of merchandise from factory to the point sale could do a lot to combat "shrink" or theft. When a chipped merchandise is found on someplace like ebay, you could confirm that it was stolen and then pursue the ebay seller to either find the thieves or at least shut down their ability to sell their il-gotten loot. It could also reduce return fraud, since you'd be able to tell whether an item was actually purchased, in the first place.
Underlying all of this, you'd need a fairly substantial database infrastructure and good, consistent connectivity. Not only that, but it adds cost to the checkout process. So, it's not a panacea, but I wouldn't be surprised to see it trickling down from high-value items to the more mass-market ones.