I rememeber when I use to put toppik on my head and one day at night went to my mates shop, he had his CCTV cameras on Night Vision mode and I could see my bald area on the TV where the picture was shown.

So last night I tried it with my Camcoder and changed it into Night Vision and saw my entire bald area with the system on.

TBH anything that works on heat, like in my other post where Doug Bollinger in caught on Hot Spot camera can detect your wearing.

Avoid Them !!!