privacy respecting blood pressure watch?
What they're not telling you: THE PRIVACY TRAP IN YOUR WRIST: Why Consumer Health Watches Have Become Biometric Harvesting Devices The FDA has never required Apple Inc., Alphabet Inc.'s Google, or Amazon.com Inc.'s Fitbit division to disclose how blood pressure readings collected from smartwatches are retained, shared, or monetized—despite these devices generating medical-grade data that travels across company servers daily. A Reddit user's straightforward question—whether privacy-respecting alternatives to Apple Watch, Google Wear OS, and Fitbit exist—exposes a structural gap in consumer health technology that regulatory agencies have failed to address. The user seeks a device functionally equivalent to mainstream smartwatches but without the data harvesting.
What the Documents Show
The market's failure to provide this option is not accidental. Apple's blood pressure monitoring feature, introduced via software update to Series 9 and Ultra 2 watches, collects systolic and diastolic readings tied to a user's Apple ID. These readings sync to Apple's Health app, which aggregates biometric data across devices. Apple's privacy policy states that Health data "may be used for research purposes," but does not specify which third parties receive access, under what conditions, or how long data persists. The company's terms permit sharing with "healthcare providers, medical researchers, and public health agencies" without explicit per-transaction consent.
Follow the Money
Google's health monitoring features on Wear OS watches function similarly. The Fitbit acquisition, completed in 2021 under regulatory scrutiny from the Federal Trade Commission, consolidated Google's access to approximately 28 million active Fitbit users' continuous heart rate, sleep, and activity data. The FTC settlement required Google to maintain separate data silos between Fitbit and advertising divisions—a technical firewall that neither the agency nor Google has publicly audited for compliance. No independent verification of data segregation exists in available documents. Amazon's Halo wearables collect body composition scans, activity tracking, and behavioral data. The company's privacy documentation states biometric information may be retained for "machine learning model development" and "service improvement"—terms broad enough to encompass commercial applications far beyond the stated health monitoring function.
What Else We Know
The absence of a mainstream privacy-respecting alternative reflects corporate consolidation in wearables manufacturing. Most blood pressure-capable smartwatches operate on closed ecosystems—Wear OS, watchOS, or proprietary platforms—that require accounts with Google, Apple, or Amazon to function. Open-source alternatives like Amazfit or Garmin devices exist but lack FDA clearance for blood pressure measurement, meaning their readings carry no medical authority and may not integrate with physician records. This creates a false binary: either use a mainstream device and surrender biometric data, or purchase a device whose health readings physicians will not recognize as legitimate. The regulatory silence is deafening. The FDA oversees medical devices but has delegated smartwatch monitoring features to a "general wellness" classification that requires minimal pre-market scrutiny.
Primary Sources
- Source: r/privacy
- Category: Tech & Privacy
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