Fundamental Rights
No person shall be deprived of his life or personal liberty except according to procedure established by law.
One sentence, but the Supreme Court has interpreted it as the broadest, most far-reaching Fundamental Right in the Constitution - covering not just protection from unlawful killing or imprisonment, but a wide range of derived rights including the right to privacy, dignity, a clean environment, livelihood, and fair legal procedure. Any government action that takes away your life or liberty must follow a fair, just, and reasonable legal procedure - not an arbitrary one.
In Justice K.S. Puttaswamy v. Union of India (2017), the Supreme Court held that the right to privacy is a Fundamental Right flowing from Article 21 - which is exactly why no genuine government agency conducts an "arrest" over a video call or demands money for "digital verification": such coercion by fake callers violates the fair-procedure guarantee Article 21 protects against.