Tracking progression of Parkinson’s disease (PD) requires long visits to the clinic and is subjected to several biases. To facilitate objective evaluation of disease state in individuals with PD, Liu et al. developed a home device able to detect and analyze movements of individuals while performing day-to-day activities. The device emits radio waves and detects them after they bounce back off the people’s body, inferring gait speed. Testing in 50 participants showed that the device performed better than the gold standard in tracking disease progression over time and was able to detect positive response to treatment, suggesting that at-home continuous monitoring could improve disease management in individuals with PD.

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