How Much Should a Bathroom Scale Know?
Wired published a review of Withings’ $600 BodyScan 2 after months of testing, describing daily body scans and a weekly scan that includes a six-lead ECG.
Buyers must distinguish useful health tracking from estimates and scores whose clinical meaning may be unclear before spending $600 or acting on the results.
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The BodyScan 2 makes bodily uncertainty visible through a polished handle and a recurring scan schedule. That information may be useful, but the elegance of its presentation cannot validate every score or make every unfavorable number a failure of personal discipline.
Wired’s October 5 review of the Withings BodyScan 2 follows several months of testing a $600 bathroom scale. The reviewer says occasional weigh-ins do not justify that expense, yet reports that the device prompted a deeper examination of personal health. Its distinguishing hardware is a slim handle with a small color LCD that presents readings and tips during a scan. The bathroom object is still recognizably a scale; the information it offers extends well beyond weight.
A daily scan takes about 30 seconds. Wired describes weight, estimated muscle and fat percentages, estimated basal metabolic rate, vascular age, and pulse wave velocity among its outputs. The default weekly “longevity scan” takes 90 seconds and adds blood oxygen, nervous system responsiveness, and a six-lead electrocardiogram with atrial fibrillation detection capability. Not every daily output appears live on the handle’s display. The ritual has acquired both a timetable and an expanded set of results.
A reading is not a verdict
The distinctions inside that list matter more than the list’s length. Weight is not the same kind of result as an estimated fat percentage. An ECG records electrical activity; its detection capability does not turn every displayed result into a complete diagnosis. Wellness tips occupy another category again. A screen can place these outputs beside one another without giving them equal evidentiary weight. Buyers need to know which figures come from sensor readings, which depend on estimation, and which require clinical interpretation.
The reviewer welcomes and dreads the weekly encounter, and describes watching the ECG waveforms as a nerve-wracking thrill. Those are reported reactions, not evidence that owners generally become anxious. More tellingly, the reviewer questions the clinical usefulness of a nerve response score of 76. The precision of the number does not answer that question. The bathroom has acquired a reporting department, but the department still owes an explanation of its grading system.
The sleek handle makes the expansion feel orderly. A person stands on the platform, holds the instrument, and receives a set of results that can seem to describe not only a body but how well that body is being managed. Tracking may help someone notice a pattern or bring a better question to a clinician. Yet a prompt to repeat a scan every seven days also establishes a product-defined cadence for attention. “Longevity” names the scan; the name alone cannot demonstrate longer life.
The useful scrutiny belongs upstream of the user’s discipline. Withings should make each output’s validation, limitations, and appropriate next steps clear enough to distinguish a meaningful change from a number that merely moved. A buyer need not reject detailed tracking to demand those distinctions. Before asking whether the person on the scale has improved, ask what evidence makes the scale qualified to say so.
Source Materials
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- Withings BodyScan 2 Review: Worth Its Weight Wired · October 5, 2026 · Primary signal · Direct source
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