Volumetric Radio Activity Wand

Two black sticks.

A wireless adapter for your computer.

What does this rapidly growing aethereal world look like?

Place one of the black sticks on a good vantage point. It is similar to the Nintendo Wii's motion tracker, and watches your wand, as you wave it too and fro, and hither and thither.

Inside the wand is a radio receiver, tunable to a range of frequencies. As you dance about the house, the location and type of radio interference is run through a spectrum analyzer and plotted.

Yes, it is wireless itself, but it tracks and nullifies its own usage. Optionally, and for more accuracy, a wired adapter is available.

Want to plot around the corner? Press a button on your second black stick, and holding down the button, move it to another vantage point where it can see the first. Let go of the button and it initializes location. Once this is done the first black stick can be moved. In this way an entire house can be mapped, without using GPS.

But the main result of all this is a 3D volumetric map of all radio interference within an abode. Each voxel is an interpolated sample from the wand. This will allow you to know where to place your laptop, store your magnetic data, hang your wireless phone, rest your weary testes -- and be confident and safe while doing so.

The plotted map would be transformable in 3D and colored by radio frequency and strength. The volume could be sliced along any axis and each voxel could be selected for more information. It would most likely reveal startlingly artistic patterns.

A poor man's 2D version of this is walking around your house with an analog cordless phone and a pencil between your toes. Every time you hear loud static or a screech, make a big circle (assuming you have papered your floor). Quieter screeches get smaller circles and silence gets a dot.

I'm assuming a variant of this has been baked (specifically volumetric radio interference maps) but I wasn't able to find anything, and so here it is!