In Selvi v. State of Karnataka (2010), the Supreme Court examined narco-analysis tests. Which statement…

In Selvi v State of Karnataka (2010) the Supreme Court held that compulsory narco-analysis, polygraph and brain-mapping tests violate the right against self-incrimination under Article 20(3) and personal liberty under Article 21. Even voluntarily taken test results cannot be admitted by themselves, though a fact later discovered with the help of information from a voluntary test may be proved under the discovery rule, now the proviso to BSA section 23(2). The results are neither a confession nor an expert opinion.