Some companies are studying technology to put a computer chip and tiny speaker inside a package. This idea might be particularly useful for big companies like Unilever that want to cross-promote their various brands. So a package of cheese could say “I go well with Triscuit crackers” when a shopper takes it off the shelf.
Here's an image for you: me picking up a package of cheese, the package saying that to me, and me flinging that package as far down the aisle as I can throw.