Maybe we’re naïve, but that’s actually the first dedicated WiFi woe that comes to mind. The part the size of a smartphone is supposed to break up WLAN blocker frequencies in the range between 2.4 and 2.5 GHz within a radius of 10 meters and render it useless. Where, who needs something and why is a bit puzzling, although there is one or the other cafe in Berlin, the laptop-centered clientele certainly produces interesting facial discos, if suddenly … but in this country, of course, jamming are, of course, seriously illegal anyway. At Chinavasion from 25,20 euros to have.