Context- Five out of six accused arrested in Parliament security breach consented to polygraph test

Definition: Lie detector measuring physiological responses.

Process: Attach instruments, measure variables (blood pressure, pulse) during questioning.

Numeric Evaluation:Assign numerical values to responses for truthfulness determination.

Court Admissibility:'Selvi & Ors vs State of Karnataka & Anr' (2010) - Results not confessions, but discovered information is admissible as evidence.

Legal Insight: Supreme Court emphasizes test results aren't confessions; subsequent discoveries through testing can be used in court.