As used in this chapter:
(1) Commerce The term commerce has the meaning provided by section
203 (b) of this title.
(2) Employer
The term employer includes any person acting directly or indirectly in the interest of an employer in relation to an employee or prospective employee.
(3) Lie detector
The term lie detector includes a polygraph, deceptograph, voice stress analyzer, psychological stress evaluator, or any other similar device (whether mechanical or electrical) that is used, or the results of which are used, for the purpose of rendering a diagnostic opinion regarding the honesty or dishonesty of an individual.
(4) Polygraph The term polygraph means an instrument that
(A) records continuously, visually, permanently, and simultaneously changes in cardiovascular, respiratory, and electrodermal patterns as minimum instrumentation standards; and
(B) is used, or the results of which are used, for the purpose of rendering a diagnostic opinion regarding the honesty or dishonesty of an individual.
(5) Secretary
The term Secretary means the Secretary of Labor.