Reporter in wrong place.
The current system in Europe means that carry-on liquids are removed either at passport control or at the departure gate, depending on where the airport prefers to do its X-ray checks.
In both cases, duty-free shops, being airside, are required to provide a sealed bag for any purchases, to prove non-contamination. If you were checked before buying (at passport control) this doesn't make much difference to you, and if you're checked at the gate, you're passed through without hassle anyway as long as you didn't break the seal.
This new gadget, while obviously a wonderful thing, will probably make very little difference to the volume of duty-free (and other airside airport shop) sales, as provision for these is already made, and no effective restrictions on them currently exist.
The shops' profit margins might rise slightly if they don't have to pay for the bags, of course, but if you're a supplier of those bags, you won't be happy. As an airport operator, you probably won't be happy about having to assume the extra cost either.
This should all be obvious to anyone who has flown in Europe recently... but may not be so obvious to those who choose to take the marketing guff at face value...