Analyze the evolution and constitutional underpinning of the Right to Privacy in India, culminating in the landmark judgment of Justice K.S. Puttaswamy (Retd.) vs Union of India. How has this judgment reshaped the understanding and application of privacy rights in the context of technological advancements and state surveillance? Discuss its implications on subsequent legal and policy decisions, specifically in relation to Aadhaar and personal data protection.

The Right to Privacy was always explicitly enshrined in the Indian Constitution, and the judgment in the case of Justice K.S. Puttaswamy (Retd.) vs Union of India merely reaffirmed its position, having limited impact on legislative or policy developments related to technology and data protection.

The Right to Privacy was recognized for the first time in the Indian Constitution by the Supreme Court in the Justice K.S. Puttaswamy (Retd.) vs Union of India case. This landmark decision led directly to the formulation and enactment of the Personal Data Protection Bill, effectively nullifying all forms of state surveillance, including Aadhaar's data collection mechanisms.

While the concept of privacy was previously hinted at within the ambit of personal liberties under the Constitution, it was the Supreme Court's verdict in Justice K.S. Puttaswamy (Retd.) vs Union of India that explicitly recognized the Right to Privacy as a fundamental right. This judgment has profoundly influenced legal perspectives on state surveillance and personal autonomy, particularly emphasizing the necessity for a balanced approach toward Aadhaar's use and guiding principles for future data protection legislation.