X13-VSA is a Voice Stress Analysis (Voice polygraph) Software. X13-VSA has been sold to nearly 12,000 professional investigators, law enforcement agencies, law firms, insurance companies, journalists, businessman's and private persons from around the world (over 150 police agencies using the X13-VSA PRO Cobra technology). The use of the X13-VSA technology continues to grow and to receive high profile attention.
Since 2008 the X13-VSA PRO Cobra technology is used also by some international airports to screen travelers.
The X13-VSA technology is the most advanced Voice Stress Analysis system that has yet been produced to detect changes in human speech and the cheapest system in the world.