Luna Smart Ring Gen 2 review: this Oura ring alternative has great battery life and sleep analytics

Announced at IFA 2025, the Luna Smart Ring Gen 2 is the second generation that tracks your biomarkers, and helps you ...
Hot Rod

How Accurate Are Wideband O2 Sensors? A Real-World Lambda Comparison Test

We tested popular wideband O₂ controllers against lab-grade equipment to see how accurate their lambda readings really are under real engine conditions.

A sweat-based sensor may help improve sleep quality

University of Texas at Dallas researchers, in partnership with Texas-based biotech company EnLiSense, have demonstrated a ...
IEEE

An Analytical Method for 3-D Target Localization Based on a Four-Element Ultrasonic Sensor Array With TOA Measurement

Abstract: A new analytical method for 3-D target localization based on a four-element ultrasonic sensor array is proposed. In the sensor array, with the consideration of good real-time performance, ...

Can your toothbrush really detect diabetes? FDA scrutiny grows for health-tracking gadgets

CES attendees saw health-tracking gadgets making bold promises: toothbrushes detecting diabetes, mirrors assessing 20-year ...