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What is DPIA and When do you need one?

With the rise of AI tools, personalized services, and data-hungry apps, businesses today arae collecting more personal data than ever before. But every innovation brings with it a set of risks — especially to user privacy. This is where Data Protection Impact Assessments (DPIAs) step in. DPIAs are not just another compliance task; they are critical tools that help organizations identify, assess, and mitigate privacy risks before launching data-heavy projects.

If you’re wondering whether your organization needs one — chances are, you probably do. Let’s break down what DPIAs are, when they’re required, and how they benefit both compliance and innovation.

What is a DPIA?

A Data Protection Impact Assessment (DPIA) is a process designed to:

  • Systematically evaluate the impact of a data processing activity on the privacy of individuals,

  • Identify and minimize risks to their rights and freedoms, and

  • Demonstrate accountability with privacy laws such as GDPR, India’s DPDPA, and others.

DPIAs are especially important when a new project involves large-scale processing, profiling, sensitive personal data, or technologies with high privacy risks (like AI, facial recognition, biometrics, etc.).

Under Article 35 of the GDPR, DPIAs are mandatory if a processing activity is “likely to result in a high risk” to individuals.

What counts as "large-scale processing"?

There’s no strict number, but regulators consider factors like the volume of data subjects involved, geographical coverage, duration of processing, and categories of data.

Example: A health tracking app collecting data from thousands of users daily across multiple cities would likely qualify as large-scale processing.

Under Article 35 of the GDPR, DPIAs are mandatory if a processing activity is “likely to result in a high risk” to individuals.

When Do You Need a DPIA?

You need to conduct a DPIA before initiating the data processing, particularly in the following scenarios:

1. Large-Scale Profiling or Scoring

Example: An e-commerce platform using machine learning to assign credit scores based on user behavior.

2. Use of Special Categories of Data

This includes racial or ethnic data, health records, sexual orientation, political views, etc.

3. Automated Decision-Making with Legal Effects

Example: An insurance company denying claims using an AI tool without human review.

4. Monitoring Public Spaces

Example: Installing facial recognition cameras in a retail store or city center.

5. Processing Children's Data

Apps or games targeting children where personal information is collected.

6. Innovative Use of New Technologies

Launching a health wearable device that collects biometric signals.

Under India’s DPDPA, Section 10 mandates “Data Protection Impact Assessments” in situations involving:

  • Processing of sensitive personal data,
  • Use of high-risk technologies,
  • Likely significant impact on data principals’ rights.

Startup Myth: "We’re Too Small for DPIAs"

Startups often believe they don’t need DPIAs because:

  • They’re not handling “that much” data.
  • They want to move fast and skip documentation.
  • Legal reviews feel like blockers.

But here’s the catch: DPIAs are most valuable at the early stage, when you can still design privacy in — instead of retrofitting it later.

Why Startups Shouldn’t Skip DPIAs-

  1. Investor & Enterprise Credibility
    More investors and B2B clients now ask: “Do you follow privacy-by-design?” A DPIA shows you’re serious about compliance and responsible innovation.

  2. Avoid Regulatory Penalties
    DPIAs help you spot gaps that could lead to fines or bans. Especially under GDPR or DPDPA, where negligence can cost you heavily.
  3. Better Product Design
    A DPIA often leads to cleaner, simpler, and more efficient data architecture, saving engineering time later.
  4. Build User Trust
    Customers are increasingly privacy-conscious. Showing that you’ve done a DPIA is like saying: We care about your data.

Case Study: NHS COVID-19 Tracing App (UK)

When the UK’s National Health Service launched its COVID-19 contact tracing app, it involved the processing of health and location data at a national scale. A DPIA was conducted to:

  • Evaluate privacy concerns,
  • Identify risks related to anonymization,
  • Recommend data storage controls and user consent measures.

The result? The app gained better public trust, higher adoption, and fewer data-related complaints.

Case Study: Sidewalk Labs Smart City (Toronto)

Google’s Sidewalk Labs proposed a smart city project in Toronto that would collect mass data through sensors across streets and buildings. Privacy advocates raised red flags due to:

  • Lack of clarity on data ownership,
  • Surveillance concerns,
  • Absence of prior DPIA.

The backlash led to the project being cancelled in 2020, showing how ignoring DPIAs can break public trust and derail innovation.

Comparative Takeaway

Both cases show that the presence or absence of a DPIA can directly influence public acceptance and project success. While NHS used proactive privacy planning to build trust, Sidewalk Labs lost public confidence due to avoidable oversights.

Benefits of Doing a DPIA (Beyond Compliance)

A DPIA is not just a checkbox for regulators — it’s a strategic decision tool that:

  • Prevents costly breaches by identifying vulnerabilities early.
  • Boosts user trust through transparent handling of data.
  • Reduces legal liability and compliance fines.
  • Improves design thinking by embedding privacy-by-design principles.
  • Enables responsible innovation aligned with user expectations and legal boundaries.

Privacy is not a roadblock to innovation — it’s the foundation of responsible growth. A well-executed DPIA ensures your idea doesn’t just make headlines for being clever — but also for being safe, scalable, and trusted.

Whether you're a budding entrepreneur or product lead, it’s time to make DPIAs your standard practice, not a last-minute checkbox.

By Aakansha Tandekar

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