The apex court, which has ventured to examine whether right to privacy can be held as a fundamental right, wanted to know about the tests which could be used to regulate and enforce privacy right when there could be "legitimate or illegitimate" use of data.
The top court gave the examples of personal information like thumb impression people voluntarily gave for using mobile phones and i-Phones which, it said, in a way amounted to surrender of privacy to both private and government bodies.
It said a large section of the people gave consent for data for a particular purpose, but wanted to know about the section which was unconcerned about the collection of data.
A specially constitituted nine-judge bench headed by Chief Justice J S Khehar sought to know how and what should be the test if there was uninformed consent for use of data by majority of internet and mobile users.
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"How could the State step in to protect or regulate data. The moment you open your i-Pad by using your thumb impression, your finger print may get into public domain and you may not know," it said.
It said contours of this right have expanded in the ageof Internet and data protection where private players were also privy to personal information of citizens.
"If there is a right to privacy which is horizontal and is actionable against the world at large and not just the State, then the immediate consequence will be an obligation on the State to enact a law to regulate private players also to ensure that this right is protected," the bench said.
"The State is then under an obligation to ensure that personal data does not go to private (non-State) parties," it said.
The bench also said, "The government cannot say that your right has been violated by private parties and hence, it cannot do anything".
The court, which yesterday observed that right to privacy could not be abolute and the State might put restrictions, questioned the extent upto which a person could claim right to privacy and decide to part or not to part with the personal information.
"In the context of digital age, how far or to which extent, can a person say that he will disclose or he will not disclose...Can you have right to privacy to suppress your identity," the bench asked.
The second day of the day-long hearing saw senior advocates like Arvind Datar, Anand Grover, Sajan Poovayya and Meenakshi Arora pressing hard that right to privacy was inherently linked to fundamental right which could not be invaded and that the government had the responsibility to protect it from being violated by both the state and private entities.
Grover also supported the arguments in favour of privacy right and assailed the verdict in the M P Sharma case, saying that the right to privacy was not argued.
The senior lawyer said the Constitution iwas a living document and its interpretation must be done in accordance with passage of time and developments in the law.
"This is very important," the bench said, adding that if India was signatory of the Universal Declaration of Human Rights in 1948, then the subsequent judgement in the M P Sharma case in 1954 was "wrong at its very inception".
Another senior advocate Sajan Poovayya referred to the fact that India has more mobile and internet users than the US and the apex court should must consider right to privacy issue in a holistic manner and referred to a US judgement on privacy.
The lawyer then said that in Karnataka a law was brought under which the state government sought data from taxi aggregators, about the people booking taxis and from which location and to which place.
"There is no justification for the government to seek such data from taxi aggregators. What will the State do with such data about people, but then it can be misused if the State takes the data to find out that you travelled from one place to such specific place on weekends," he said.
Poovayya said in the digital world, the collection and analysis of data were being done simultaneously in such a way through artificial intelligence that it was not known to everybody.
He said in today's world, digital property is as important as physical property and that's why the need for right to privacy becomes paramount.
The arguments remained inconclusive and would resume on July 25 when Attorney General K K Venugopal would put forth the government's views.