I don't know but looking at nickberg.org and his inventions it seems he had an aptitude for such things. In High School he developed some kind of device that scrambled communications/broadcasts within localized areas and also some kind of motion detectors. (Apologies if this is repetitive, there is so much information here and so much that I have read elsewhere that it is hard to keep track.)
Yes, I agree Berg certainly was capable! Guess it's time for all you folks in the US to go to bed...I'll catch up with everyone with my morning coffee...goodnight from Australia.