Contactless overnight tracking using a sensor beneath a mattress.
What it is, why people use it, the evidence, and what to know before trying it.
Small mechanical signals can be processed into estimates of movement, respiration and heartbeat. Sleep-stage estimates depend on algorithms and require separate validation against clinical measurements.
Evidence basis: Early or theoretical research
These devices can record overnight patterns, but accuracy is metric- and device-specific. A manufacturer’s intended-use description alone does not establish clinical validity.
Confidence: weak
Known limitations and precautions from reviewed sources.
Consumer estimates should not diagnose sleep apnea or guide treatment changes. Symptoms and clinical assessment take priority; installation, electrical safety and data handling vary by product.
Reviewed branded products and distinct forms related to Under-mattress sleep tracking. A listing is not an endorsement.
Emfit
An under-mattress system for tracking overnight movement and physiological signals.