Usually I use my desktop computer to surf the web, but recently I decided I want to be able to also use my mobile computer at home, and this require network access. At first I inquired about using WIFI access, but there is a major downside to this for me: I don't want the router to broadcast a signal while I don't need it (both to save energy and to avoid an extra EM field around the house). So I thought about using Bluetooth: Easy to turn on and off Cheap (50-100nis for a BT adapter for...