----- Begin Included Message ----- It is speculated that poorly protected systems can be effectively monitored up to the order of one kilometer from the target equipment. ----- End Included Message ----- The "readability" of the relatively high energy sweeps in a standard CRT monitor is well known. Any idea of similar effects on LCD screens ? The energy involved would be orders of magnitude less, just for starters. Also, since the whole screen is effectively oscillating, I'm not sure that there is any 'raster' sweep per se going on here at all. This could be a factor for the truly paranoid :-) using portables with LCD screens. Pete Carpenter pete@cirrus.com Talk about your plenty, talk about your ills, One man gathers what another man spills. - Robert Hunter