from a recent press release...
...is the world's leading provider of high attenuating radio frequency and infrared optically clear substrates for privacy and electronic eavesdropping protection i.e. RF flood attacks, "bugs", LASER attacks, thermal imaging, also known as Technical Surveillance Counter-Measures (TSCM). (more)
Dudes. Thermal imaging?!?!
1. Thermal imaging is not an electronic eavesdropping technique.
2. Thermal imaging is not even a visual privacy invading technique.