This article is provided for general educational purposes only and should not be considered legal advice. Regulations and legal interpretations can change, so businesses should consult qualified legal counsel before making compliance decisions.
California privacy litigation has taken a strange turn.
A law originally built around wiretapping and telephone surveillance is now being used to challenge everyday website tools: analytics pixels, session replay, email signup forms, consent tools, performance monitoring, and other scripts that most e-commerce stores rely on to function.
For Shopify store owners, this has created a new category of demand letter. The claim usually sounds something like this:
Your website loaded third-party scripts that collected routing, device, location, or browsing data from a California visitor without prior consent. Therefore, those tools may qualify as an illegal “pen register” or “trap and trace” device under the California Invasion of Privacy Act, commonly called CIPA.
That is a very broad reading of the law. Courts are still split on how far these claims can go, and the legal landscape is changing quickly. But the practical takeaway is simple:
If your Shopify store serves California customers, you should understand what scripts are firing, why they are firing, and whether they are tied to a consent system.
This is not legal advice, but it is a practical e-commerce warning.
What Is CIPA?
CIPA is the California Invasion of Privacy Act. One part of the law, California Penal Code Section 638.51, says a person may not install or use a pen register or trap-and-trace device without a court order, unless an exception applies. One listed exception is when user consent has been obtained.
Plaintiffs’ attorneys have argued that common website tracking technologies can act like modern pen registers because they may collect routing, device, IP address, browser, or interaction data.
That theory is being tested in courts right now. Some courts have allowed claims to move forward. Others have dismissed similar claims. The result is an unsettled legal environment where e-commerce brands are receiving demand letters even when the tools being flagged are ordinary parts of running a modern website.
Why Popa v. Microsoft Matters
In Popa v. Microsoft, the Ninth Circuit affirmed dismissal of a session-replay case involving Microsoft Clarity because the plaintiff did not show a concrete injury for Article III standing.
The court explained that browsing pet supplies and having website interactions captured did not resemble the kind of highly offensive privacy harm traditionally actionable in common law.
That decision is helpful for brands defending against website tracking claims, especially when the alleged data is ordinary browsing activity rather than sensitive personal information.
But Popa does not end the CIPA issue. The decision was about standing, and courts have applied it differently in later CIPA pen register cases. Some courts have used Popa to dismiss claims; others have distinguished it and allowed claims to continue.
In plain English: Popa is good news for defendants, but it is not a magic shield.
Why Shopify Stores Are Being Targeted
Shopify stores often have a predictable set of third-party tools:
- Shopify platform scripts
- Klaviyo forms
- Google Analytics
- Google Ads
- Meta Pixel
- Microsoft Clarity
- TikTok Pixel
- Affiliate pixels
- Reviews apps
- Chat widgets
- A/B testing tools
- Heatmap and session replay tools
Demand letters often include a list of network requests and imply that every request is suspicious.
That is where store owners need to slow things down. Not every endpoint is advertising. Not every request stores customer data. Not every third-party call is optional. Some requests are required for core storefront functionality, consent handling, form rendering, error logging, localization, fraud prevention, or performance monitoring.
The right response starts with a technical audit.
Commonly Flagged Endpoints and What They Usually Do
Below are examples of endpoints we have seen flagged in privacy demand letters, along with the practical context store owners should understand.
| Endpoint | What It Usually Does | Why It Matters |
|---|---|---|
| otlp-http-production.shopifysvc.com/v1/metrics | Shopify telemetry, performance, and error-monitoring data. | This is generally tied to Shopify platform operations, page speed validation, and storefront reliability. Store owners typically do not control this endpoint directly. It should be reviewed as operational telemetry, not automatically treated as marketing surveillance. |
| a.klaviyo.com/forms/api/v3/geo-ip | Klaviyo form location logic. | Klaviyo uses IP-based location signals for form targeting and regional display rules. This can help determine whether a visitor should see a specific form, language, or regional message. |
| static-forms.klaviyo.com/forms/api/v7/.../full-forms | Klaviyo signup form rendering. | This request loads the structure and fields needed to display a newsletter or SMS signup form. Blocking it may prevent the form from rendering correctly. |
| www.clarity.ms/tag/shopify/... and p.clarity.ms/collect | Microsoft Clarity loading and consent-aware collection. | Microsoft Clarity supports Consent Mode and consent APIs. These requests should be reviewed to confirm whether Clarity is waiting for a valid consent signal before setting cookies or collecting analytics data. |
| www.google-analytics.com/g/collect and analytics.google.com/g/collect | Google Analytics and Google Tag requests. | Google Tags often need to load early so consent state can be applied. The key question is whether the tag is configured to respect consent before analytics or advertising storage is granted. |
The technical distinction matters. A demand letter may treat all network traffic as invasive tracking. A proper review should separate:
- Required platform operations
- Storefront feature delivery
- Consent-state communication
- Analytics
- Advertising
- Session replay
- Personalization
- Data sale or sharing
- Sensitive-data collection
Those are not all the same thing.
What Shopify Store Owners Should Do Now
The best defense is not panic-removing every app from your store. That can break analytics, email capture, conversion tracking, support workflows, and even core storefront behavior.
A better approach is to document and control what happens.
1. Run a Script and Network Audit
Inventory every script, pixel, app embed, custom pixel, theme script, and tag manager container on the storefront.
For each one, document:
- What tool owns it
- What endpoint it calls
- Whether it fires before or after consent
- What data appears in the request payload
- Whether it is required for storefront functionality
- Whether it is analytics, marketing, preferences, or operational
- Whether it can be disabled, delayed, or moved into Shopify Customer Events
This gives your legal team something much stronger than “we think it’s fine.”
2. Implement a Consent Banner
CIPA Section 638.51 includes consent as one of the exceptions. That does not mean a banner solves every possible claim, but it is one of the most practical steps a Shopify merchant can take.
A good consent implementation should:
- Show before non-essential tracking fires
- Let users accept or decline categories
- Store the user’s choice
- Pass consent signals to Shopify
- Pass consent signals to major tools like Google, Microsoft Clarity, and other pixels
- Allow users to update preferences later
Shopify provides a Customer Privacy API that can be used to verify data processing permissions or build a cookie consent banner. This helps apply consent decisions to Shopify-managed surfaces like pixels, audiences, and checkout.
3. Move Tracking Into Shopify Customer Events Where Possible
Shopify’s Web Pixels and Customer Events system is designed to work with Shopify’s privacy controls.
This is usually cleaner than scattering tracking scripts throughout theme files, checkout scripts, tag managers, and app embeds.
4. Review Session Replay and Heatmap Tools Carefully
Session replay tools are useful, but they are also frequently named in demand letters.
If you use Microsoft Clarity, Hotjar, FullStory, Lucky Orange, or similar tools, confirm:
- Sensitive fields are masked
- Keystroke capture is limited or disabled
- Recordings are not tied to unnecessary personal identifiers
- Consent mode is enabled
- The tool does not set cookies before consent where consent is required
- The privacy policy accurately describes the tool
5. Update the Privacy Policy, But Do Not Rely on It Alone
A privacy policy is important, but a footer link by itself is usually weaker than affirmative consent.
Your policy should clearly describe:
- Analytics tools
- Advertising pixels
- Email and SMS signup tools
- Session replay or heatmap tools
- Data sharing categories
- User rights and opt-out methods
- How consent preferences can be changed
But the technical setup needs to match the policy. If the policy says users can decline analytics, the site should actually prevent analytics storage or tracking when the user declines.
What Not to Do
Do not assume every demand letter is valid.
Do not assume every endpoint is dangerous.
Do not assume Shopify’s default setup covers every third-party script added by apps, theme code, Google Tag Manager, or custom pixels.
And definitely do not assume that removing one pixel solves the whole issue.
These claims are often built from automated scans. A scanner can show that a request happened, but it does not always explain why it happened, what data was sent, whether consent was respected, or whether the request was required for the store to function.
That is where technical documentation matters.
The Practical Text Connects Recommendation
For Shopify and Shopify Plus stores, we recommend a three-part privacy hardening review:
1. Audit all storefront scripts, pixels, apps, and third-party endpoints.
2. Implement or verify a consent banner that correctly controls analytics, marketing, preferences, and sale/sharing signals.
3. Move tracking into Shopify Customer Events and consent-aware integrations wherever possible.
This will not guarantee that a brand never receives a demand letter. Unfortunately, demand letters are now part of the ecommerce landscape.
But it does put the brand in a much better position to respond.
You can show what each endpoint does. You can show which scripts are operational versus marketing. You can show which tools respect consent. You can show that sensitive data is not being intentionally captured by analytics or session replay tools.
That is the difference between scrambling after a letter arrives and having a defensible privacy posture already in place.
Final Thought
The CIPA litigation wave is a reminder that e-commerce privacy is no longer just a checkbox in the footer.
For modern Shopify stores, privacy has become a technical implementation issue. Consent banners, pixels, app embeds, analytics tools, and form scripts all need to work together.
The goal is not to stop using useful tools. The goal is to know what your store is loading, explain why it is loading, and make sure customer consent is respected before non-essential tracking begins.