Re: The best tech is invisible
Get it out and wave it at the nearest cat. If they show interest, it's a carton of milk/tuna/nice cold meat that you bought specially for yourself not for the greedy footpads inhabiting your house.
If they flee in terror, it's cucumber.
 Not really. I showed the cats cucumber and got a distict 'meh' response in return. But then my cats are all slightly odd..
 According to herself anyway.