lie detect: Gadget Reviews: How Spy Gadgets Work | Gadget Reviews -

You can track computer usage as well, whether it is of members of your family or staff, using undetectable software on computers. How do the gadgets work? Miniaturization and computerization have helped make the covert gadgets easier to use and decreased the likelihood of detections. ... Of course, none of these gadgets are infallible â€" even a properly regulated polygraph test by the authorities and people who are trained to use them can give erroneous results. ...