Lots of mentions of TEMPEST...
...but surely that only works on CRTs and now (nearly) everyone has LED/LCD screens it's obsolete.
I'm more taken by the claim that it's possible " to .. “sniff” all the keystrokes of wireless keyboards from ... up to 100 metres away." Now, I appreciate "up to 100" includes "a maximum of 5" but this MS3000 won't do more than about 10 feet. Or is that a limitation of my receiver and they're using Arecibo-size kit?