What to make of Sevli v. State of Karnataka, and the tension between investigative imperatives and a suspect’s right against self-incrimination? In this opinion piece in today’s The Indian Express, I argue that hopefully, the judgment will be read narrowly. In an earlier blog post, Taunabh has already laid out the case details. One fascinating aspect, which my piece does not explore, is the thin dividing line between a medical test (DNA samples, for instance), where consent is not required, and a “testimony”, where it is. The court terms brain-mapping as a testimony, but is it really?