A marketing campaign by Kit Kat: “Have a break, have no Wi-Fi”. The brand installed a couple of “Wi-Fi free” spots in Amsterdam to encourage people to have a real conversation instead of texting. Well, great message, but they replaced one devil with another: In a city like Amsterdam it’s a vain endeavour to create a REAL Wi-Fi free area in public places. Therefore they installed Wi-Fi jammers which blocked all signals within a radius of 5 metres. Result: no mobile connection due to an added microwave signal.