1.   Blake recanted several months ago and when he was hooked up to a polygraph machine, he passed.

2.   Included are guidelines for the design of a wide range of high-tech gizmos, from surveillance software to portable polygraph machines and lightweight personal armor.

3.   Listening to Jerry and Jimmy all week, it also makes you think about investing in a polygraph machine.

4.   Polygraph machines measure stress-related changes in respiratory and heart activity, blood pressure and skin response.

5.   Worn down and relieved to be away from the polygraph machine, Zamarripa said he finally confessed.