Lawyer Hatch Lawyer Hatch
📚 Part of: Constitutional Law guide

Right to Privacy and Data Protection

Two rulebooks decide who may dig into your life: one for the State, one for every app. Here's how each works, and how CLAT tests them.

KG ✔ Reviewed by Kanika Goyal · Law student, WBNUJS Kolkata
11
past CLAT Qs mapped
2024 + 2025
back-to-back passages
2
solved in full
11 min
read
Practise Constitutional Law drills →
📑 On this page
⚡ The short answer
The right to privacy is a fundamental right, part of the right to life and personal liberty (Puttaswamy, 2017). It covers your body, your information and your choices. It isn't absolute: the State may intrude only under a law, for a legitimate aim, by proportionate means. Against private companies, the data protection law does the work.
🎬 The 30-second story
The gym that sold its member list
1
“Name, phone, Aadhaar copy. Just for your membership card!”
🏋️
Kabir
Zoya joins Kabir's gym.
2
“Why is a loan app calling me?”
📱
Zoya
Kabir had sold his member list.
3
“That's my privacy. I'm filing an Article 21 writ!”
⚖️
Zoya
Furious, and half right.
4
“Against a gym? Fundamental rights are a shield against the State.”
🤔
Rohan
So has Zoya no remedy?
Tara's ruling: She has one, just not that one. Kabir's gym isn't the State, so the data protection law applies: Zoya consented to a membership, not marketing. She can withdraw consent, demand erasure and complain to the Data Protection Board.

What is the right to privacy?

Privacy is a zone the world can't enter without good reason: your body, your home, facts about you and choices about your own life. The Constitution never uses the word. In 2017 nine judges held that it lives inside life and personal liberty, and inside the other freedoms too.

🧩 At a glance
Three faces of privacy
🫀Bodily
Your body and home: no forced tests, no midnight knock.
📂Informational
Health records, bank details, location, call logs.
🧭Decisional
Whom to love or marry, whether to have a child.

A CLAT passage puts it like this: "Privacy is fundamental but not absolute; any intrusion must be backed by law, pursue a legitimate aim and be proportionate." Run the facts through each limb in order and stop at the first that fails.

📌 What CLAT actually expects
CLAT 2024 and 2025 both gave you a data protection passage. Read each exemption and consent rule literally: what it allows, for whom, for what purpose.

How did privacy become a fundamental right?

🕒 Timeline
From 'no such right' to a nine-judge yes
  1. 🔎
    1954
    M.P. Sharma
    Search and seizure upheld; no constitutional privacy right to stop it.
  2. 🚪
    1962
    Kharak Singh
    Night visits to a suspect's home struck down; shadowing allowed.
  3. 👁️
    1975
    Gobind
    Assumes a privacy right, but surveillance allowed for genuine dangers.
  4. 📰
    1994
    R. Rajagopal
    Privacy is the 'right to be let alone'.
  5. 🧠
    2010
    Selvi
    Forced narco and lie-detector tests struck down.
  6. 🔐
    2017
    Puttaswamy I
    Privacy is fundamental; the contrary parts of M.P. Sharma and Kharak Singh overruled.
  7. 🆔
    2018
    Puttaswamy II
    Aadhaar for welfare upheld; some uses struck down.
  8. 💾
    2023
    Data protection law
    Tested in CLAT 2024 and 2025.

When can the State invade your privacy?

The State checks bags at airports and taps terror suspects' phones. Puttaswamy allows intrusion that clears three hurdles; the Aadhaar case split the last into four sharper checks.

🧮 The formula
The three-part test
📜
A law
not a mere circular
+
🎯
A legitimate aim
security, crime, welfare
+
⚖️
Proportionate means
no heavier than needed
=
✅
A valid intrusion
🧭 Decision flow
Does this intrusion survive?
❓ Is it backed by a law?
An executive circular alone won't do.
No →
Fails legality
The order to link every SIM to Aadhaar fell here.
Yes ↓
❓ Does it pursue a legitimate aim?
No →
Fails: no legitimate aim
Yes ↓
❓ Does the measure actually help achieve the aim?
No →
Fails suitability
Yes ↓
❓ Is there a less intrusive way that works as well?
Yes →
Fails necessity
A bag check, not a strip search.
No ↓
❓ Is the harm out of proportion to the gain?
Yes →
Fails balancing
No →
Valid intrusion
With safeguards against abuse.

Order matters. A noble aim can't rescue an intrusion with no law behind it. That's why one Aadhaar number survived some uses and died in others.

Use of AadhaarResultWhy
Welfare subsidies from public money✅ UpheldLaw, real aim, proportionate
Linking PAN for income tax✅ UpheldLaw aimed at tax evasion
Private companies verifying you❌ Struck downInvited commercial exploitation
Linking every mobile SIM❌ QuashedOnly a circular: no law
Linking every bank account❌ Struck downDisproportionate: everyone treated as a suspect
School admission, NEET, JEE🚫 Not mandatoryNot a subsidy; no law requires it
→ scroll to see more

Is every fact about you private?

No. The Aadhaar majority protected matters where you have a reasonable expectation of privacy. Your face in a crowd isn't secret; your medical file is. The more intimate the data, the stronger the justification the State needs.

🎚️ The scale
How strong is your privacy claim?
← Weak expectationCore privacy →
Public face
Name on a door, face at a rally
Contact data
Phone, email, address
Financial
Bank details, loans
Health, biometrics
Medical history, fingerprints
Mind
Forced narco tests
e.g. Selvi: off-limits

Can the press publish facts about your life?

R. Rajagopal, about a magazine printing a death-row convict's autobiography, set rules CLAT loves:

Does privacy protect you against companies too?

Fundamental rights mainly bind the State. Puttaswamy warned that platforms can know you better than any government, and asked for a data protection law. The DPDP Act, 2023 binds companies and government alike, with wide carve-outs for government.

⚔️ Side by side
Two rulebooks for one right
🏛️Constitutional right
a shield against the State
  • •Writ in a High Court or the Supreme Court
💾Data protection law
binds anyone handling digital personal data
  • •Grievance officer, then the Board
TestConstitutional rightData protection law
The testLaw, aim, proportionalityConsent or a legitimate use
What you getAction quashedA penalty on the company, paid to the government

Kabir's gym is a data fiduciary, not 'the State'.

What does the data protection law say?

🔗 Who owes whom
Who's who in data protection
gives consent hands data to complains penalises Data Fiduciary decides why and how Data Principal whose data it is☁️Data Processor acts on orders🏛️Protection Board hears complaints
  • Data Principal → Data Fiduciary: gives consent
  • Data Fiduciary → Data Processor: hands data to — fiduciary stays responsible
  • Data Principal → Protection Board: complains
  • Protection Board → Data Fiduciary: penalises

Consent must be free, specific, informed, unconditional and unambiguous, by a clear affirmative action, for a stated purpose, covering only the data that purpose needs. A pre-ticked box isn't affirmative; 'any purpose' isn't specific.

Some legitimate uses need no consent: data you volunteered for a stated purpose, State benefits, legal duties and court orders, medical emergencies, epidemics and disasters, some employment needs.

🧩 At a glance
Your rights as a data principal
📋Know
A summary of your data and who got it.
✏️Correct
Fix, complete or update it.
🗑️Erase
Once the purpose or consent ends.
↩️Withdraw
As easily as given; works going forward.
📣Complain
Grievance officer, then the Board.
🧑‍🤝‍🧑Nominate
Someone to act on death or incapacity.

Children (under 18) need verifiable parental consent, and may not be tracked or targeted with ads. You have duties too: no impersonation, no false complaints.

Where does the government get a pass?

Processing to prevent, detect, investigate or prosecute offences is exempt; so are notified security agencies, research and statistics, and tracing a loan defaulter's assets. The CLAT 2024 passage called these carve-outs too wide. Challenges are pending in the Supreme Court.

⚠️ Read the exemption, not the vibe
An exemption covers only its stated purpose. Tracing a defaulter's assets and liabilities doesn't let the bank read his family's medical history. Outside the purpose, the normal rules snap back.

Which cases should you know for privacy?

🚪
Landmark case · 1962 · Supreme Court
Kharak Singh v State of UP
📋
What happened
Released in a dacoity case for want of evidence, Kharak Singh was put under police surveillance: night visits, picketing, his movements logged.
❓
The question
Does this violate his personal liberty?
🔨
What the court held
Night visits to his home, backed by no law, were struck down. The rest survived: privacy, said the majority, isn't a guaranteed right. Justice Subba Rao dissented.
What CLAT takes from it: The dissent became the law in 2017.
🔐
Landmark case · 2017 · Supreme Court (9 judges)
Justice K.S. Puttaswamy v Union of India
📋
What happened
A retired judge challenged Aadhaar. The government said older benches had found no fundamental right to privacy.
❓
The question
Is privacy a fundamental right?
🔨
What the court held
Yes, unanimously: an intrinsic part of life and personal liberty and the Part III freedoms. Contrary parts of M.P. Sharma and Kharak Singh overruled.
What CLAT takes from it: Privacy is about dignity and autonomy. Intrusion needs law, aim and proportionality.
🆔
Landmark case · 2018 · Supreme Court (5 judges)
Puttaswamy (Aadhaar) v Union of India
📋
What happened
The Aadhaar Act itself: biometrics of a billion people, tied to welfare, tax, banks and SIMs.
❓
The question
Does the scheme pass the privacy test?
🔨
What the court held
By 4:1, welfare and PAN uses passed; private-company use and forced bank and SIM linking did not. Justice Chandrachud would have struck down the whole Act.
What CLAT takes from it: Same test, different results. Apply each limb to each use.

How has CLAT asked privacy?

📝 Asked in CLAT 2024 · Q73 Reading an exemption
…the law isn't balanced, because it provides wide exemptions to the processing of personal data to the government. For instance, data can be processed "in the interest of prevention, detection, investigation or prosecution of any offence … in India." … The government is not bound by purpose limitations, allowing data collected for one specified purpose be used for a new, incompatible purpose, which stands in contrast to the regulations imposed on businesses.

Suppose the DPDPA, 2023 provided exemption for the processing of personal data for the purpose of ascertaining the financial position of any person who has defaulted in payment of amount due on loan taken from a nationalised bank. Mr. X Commits a default in repayment of EMI of loan taken from a nationalized bank.

AThe bank can demand access to and process the personal data of Mr. X relating to family history of ailments from which Mr. X or his family was suffering.
BThe bank can process the personal data of Mr. X viz., the particulars of the family, wife, children, brothers etc.
CThe bank can process the data of Mr. X for the purpose of ascertaining the assets and liabilities of the defaulter.
DAll of the above.
Reveal answer + reasoning
Answer: C
The exemption is defined by its purpose: a defaulter's financial position. His assets and liabilities fit exactly; anything beyond falls back under normal data protection.
Why the others fail
  • A — Family illnesses say nothing about his finances.
  • B — Relatives' details are other people's data, not his finances.
  • D — A and B fail, so D fails.
📝 Asked in CLAT 2025 · Q81 Withdrawing consent
The Supreme Court of India declared that the right to privacy is a fundamental right… The entity processing data can do so either by taking the concerned individual's consent or for "legitimate uses"… The law requires that an individual's consent must be "free, specific, informed, unconditional and unambiguous with a clear affirmative action" and for a specific purpose… Individuals have the right to withdraw consent if consent is the ground on which data is being processed.

A social media platform processes user data based on the consent given during account creation. A user now wishes to withdraw consent to process their data. Under the digital personal data protection law in India, what must the platform do?

ARefuse to accept the withdrawal request since consent was already given
BComply with the legal requirements and stop processing the data
CContinue processing the data but notify the user
DAllow withdrawal only after 30 days
Reveal answer + reasoning
Answer: B
Consent is the only ground here, and the passage gives a right to withdraw it, so the platform must stop. (Under the Act, processing before withdrawal stays lawful; only future processing ends.)
Why the others fail
  • A — Consent isn't a lifetime licence; that's the point of withdrawal.
  • C — Notice is no substitute for stopping.
  • D — The passage sets no waiting period.
ℹ️ A wrinkle in CLAT 2025
The 2025 passage said sensitive data needs extra safeguards, and the key to Q83 follows it. The final Act has no separate 'sensitive data' category; children's data gets the extra care. In the exam, the passage wins.
💥 Myth vs fact
Myth or fact?
🙅 Myth
The Constitution expressly guarantees privacy.
Tap to bust it →
✅ Fact
The word never appears. Courts read it into life and personal liberty.
🙅 Myth
After Puttaswamy, privacy beats everything.
Tap to bust it →
✅ Fact
It's not absolute: law, legitimate aim and proportionality make an intrusion valid.
🙅 Myth
Puttaswamy struck down Aadhaar.
Tap to bust it →
✅ Fact
2017 only declared the right. In 2018 Aadhaar was largely upheld.
🙅 Myth
If an app leaks my data, I file an Article 21 writ against it.
Tap to bust it →
✅ Fact
Rights mainly bind the State. Against a company, use the data protection law or tort.
🎯 Quick quiz
Five fact patterns
0 / 5
Rule: the State may intrude on privacy only under a law, for a legitimate aim, by proportionate means. A police circular orders cab apps to share every rider's live location, to cut crime.

Q1. Is the circular valid?

Same rule. A statute lets a government university demand every student's psychiatric history before issuing a library card, 'for safety'.

Q2. The strongest objection?

Rule: consent must be specific and given by a clear affirmative action. Meher, 19, installs an app with a pre-ticked box: 'Your data may be used for any purpose.'

Q3. Valid consent?

Rule: consent may be withdrawn anytime; withdrawal doesn't affect earlier processing. Rohan let a fitness app share his steps with an insurer in January. He withdraws in March.

Q4. Which is correct?

Rule: private life can't be published without consent, but public records can, except that a sexual-offence victim must not be named. A site publishes (i) a fraudster's life story from his trial record, (ii) a victim's name from a trial record.

Q5. Which is lawful?

🎯 In a nutshell
  • Privacy is a fundamental right: body, information, choices.
  • Not absolute: law + legitimate aim + proportionality. Check legality first.
  • Aadhaar: welfare and PAN upheld; private use, bank and SIM linking struck down.
  • Against companies: specific consent or a legitimate use, plus rights to know, correct, erase, withdraw.
  • Exemptions cover only their stated purpose.
📎 Good to know, not to memorise
  • Puttaswamy (2017) 10 SCC 1, nine judges, 24 Aug 2017; Puttaswamy (Aadhaar) (2019) 1 SCC 1, 26 Sept 2018, 4:1.
  • Kharak Singh (1962, 4:2); Gobind (1975); R. Rajagopal (1994); Selvi (2010).
  • Aadhaar Act 2016: s.7 welfare, s.57 private use (struck down in part); PAN linking: s.139AA Income Tax Act.
  • DPDP Act 2023: s.6 consent, s.7 legitimate uses, s.9 children, ss.11–14 rights, s.17 exemptions; penalties up to ₹250 crore. Rules notified 2025.
Ready for a full passage?
Timed drills built like the CLAT 2024 and 2025 data protection sets.
Start the drill

Frequently asked questions

Is the right to privacy a fundamental right in India?
Yes. In Puttaswamy (2017), nine judges unanimously held that privacy is an intrinsic part of the right to life and personal liberty and of the other Part III freedoms. The word isn't in the Constitution; the Court read it in and overruled older benches that had said otherwise.
What is the three-part test from Puttaswamy?
A State intrusion on privacy needs a law, a legitimate aim, and proportionate means. The Aadhaar case split proportionality into four checks: a proper goal, a rational link to it, no equally effective but gentler alternative, and a fair balance between the gain and the harm.
Is Aadhaar mandatory after the Supreme Court judgment?
For welfare subsidies paid from public funds and for linking PAN, yes. The Court barred making it compulsory for bank accounts, SIM cards, school admissions and exams like NEET and JEE, and struck down private companies' use under the Act. A 2019 amendment later allowed voluntary bank and SIM use.
Does the DPDP Act treat sensitive data differently?
No separate 'sensitive personal data' category exists in the final Act; all digital personal data gets the same core protection, with extra rules for children. Older drafts had one, and the CLAT 2025 passage described extra safeguards for sensitive data. In the exam, apply whatever the passage says.
Can I enforce privacy against a private company?
Usually not through a writ, since fundamental rights mainly bind the State. Use the data protection law instead: complain to the company's grievance officer, then to the Data Protection Board. You may also sue in tort, for example for breach of confidence.

Keep going

📚
Part of the chapter
Constitutional Law for CLAT
See how this topic fits the whole of Constitutional Law →

Connected topics in other chapters

Every topic in Constitutional Law

  1. 1.Who Is “the State”? Article 12 Explained
  2. 2.Article 14: Equality, Classification and Arbitrariness
  3. 3.Articles 15 and 16: Non-Discrimination and Reservation
  4. 4.Article 19: The Six Freedoms and Reasonable Restrictions
  5. 5.Article 20: Ex Post Facto, Double Jeopardy and Self-Incrimination
  6. 6.Article 21: From Gopalan to Maneka (and Beyond)
  7. 7.Right to Privacy and Data Protection (you're here)
  8. 8.Article 22: Rights on Arrest and Preventive Detention
  9. 9.Right to Education (Article 21A): Free School from 6 to 14
  10. 10.Freedom of Religion: Articles 25–28 and Essential Practices
  11. 11.Minority Rights: Articles 29 and 30
  12. 12.The Five Writs: Habeas Corpus to Quo Warranto
  13. 13.Directive Principles and Fundamental Duties: Unenforceable, Not Useless
  14. 14.Free Legal Aid: Article 39A and the Right to a Lawyer
  15. 15.Environment and the Constitution: Polluter Pays to Sustainable Development
  16. 16.Basic Structure Doctrine and Amending the Constitution
  17. 17.Separation of Powers and Federalism: Who Gets to Do What

Ready to practise?

Free CLAT UG drills, sectional tests and full mocks in the real exam-screen format — timer, palette, instant scoring and solutions.

Practise Constitutional Law drills →