The case of K.S. Puttaswamy v. Union of India, which was heard by the Supreme Court of India in 2017, and People’s Union for Civil Liberties (PUCL) v. Union of India, which was heard in 1997, dealt with the issue of the right to privacy as a fundamental right under the Indian Constitution.

The case of K.S. Puttaswamy v. Union of India was a petition filed by retired judge K.S. Puttaswamy challenging the constitutional validity of the Aadhaar Act, which mandated the use of biometric identification for accessing various government services. Puttaswamy argued that the Aadhaar Act violated the right to privacy of citizens.