As a 'spy detector' yeah, would have to be made domestic I guess.

A better machine would have to be built to view them in general as I have heard that Kirlian Photography is flawed for some reason, it shows a field when there is no person within the frame, might be residue and its only what I heard but taking the existing machines and improving on them would be the best thing to do along with a full study of auras as magnetic fields proper. It should be easy enough to have detectors that pick up on the spectrum's shown, ie if they are suspicious or not, peoples energy fields vary but not enough for it to be impossible to read and define.

A camera that puts your Aura or Energy Field on film instantly

^^ Kirlian technology



^ Videos of auras

Auric technology would include the HAARP project, High Frequency Active Auroral Research;

High Frequency Active Auroral Research Program - Wikipedia, the free encyclopedia
HAARP.net - The Military's Pandora's Box by Dr. Nick Begich and Jeane Manning

Very real, very scary. Messing with the earths magnetic field.

Sounds far fetched but its also possible to create a force field by further understanding how the aura is projected.

--edditt--