In the wake of the COVID-19 pandemic, continuous temperature monitoring has become an essential feature of smart wearables.

Studies have shown that 12 to 24 hours before the onset of noticeable fever symptoms, the skin temperature on the wrist already exhibits abnormal fluctuations of 0.5 to 1.0°C. Smartwatches are the ideal tools for detecting this signal.

Unlike traditional single-point temperature measurements, smartwatches use multiple infrared temperature sensors to collect skin temperature readings every 10 seconds. By applying a compensation algorithm that accounts for ambient temperature, they generate a “basal body temperature curve.” 

When the algorithm detects that a user’s nighttime resting body temperature is more than 0.8°C higher than their personal baseline, accompanied by multidimensional data anomalies such as elevated heart rate and accelerated respiratory rate, the watch will send an alert stating, “Suspected infection risk; it is recommended to take your temperature and limit outings.” 

In a clinical study involving 5,000 users, this multimodal early warning model achieved an 89% accuracy rate in predicting respiratory infections, with an average lead time of 14 hours. Additionally, female users can use the temperature curve to accurately predict their ovulation period, increasing the success rate of conception by 40%.

Body temperature is the oldest indicator of illness, yet it’s also the easiest to overlook.

Shop for smartwatches at Venus Smart Shop to stay one step ahead of fever and protect your family’s health.