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#wearables

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m3se
M3.se @m3se@friendica.helvetet.eu · 4d ago
Barnet kan därefter använda Google Pay för att betala kontaktlöst i butiker.#Android #Wearables Föräldrar kan nu skicka pengar till sina barn via Google Wallet
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m3se
M3.se @m3se@friendica.helvetet.eu · Aug 06, 2026
Den nya modellen har kodnamnet Galaxy Aero och förväntas bli en billigare wearable.#Wearables #Smartwatches Samsung verkar jobba på ny smartklocka med batteritid på en vecka
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jcrabapple
jcrabapple @jcrabapple@dmv.community · Aug 03, 2026
🟢 Your smartwatch's green light has a 90-year-old secret origin. That tiny LED is photoplethysmography (PPG), an optical trick from 1937. Physiologist Alrick Hertzman at St. Louis University pointed a light bulb and photocell at a finger and watched the pulse show up in the changing light passing through the blood. Same principle, different scale: it now runs hospital pulse oximeters and every fitness wearable. Green light near 520-530nm is strongly absorbed by hemoglobin, so when your heart beats and floods the wrist with blood, less light bounces back to the sensor. Count those dips and you have a heart rate. One bit of history worth knowing: the rabbit's-ear version of this experiment belongs to Molitor and Kniazuk at the Merck Institute in 1936. Hertzman's landmark 1937 paper measured human fingers and toes, not a rabbit. The tech also keeps shrinking. In April 2025, SCIVAX and TSLC in Japan announced the world's smallest PPG sensor head at about one square millimeter, a tenth the conventional size. Miniaturization like that is why rings like Oura can get so thin. Read more: https://journals.sagepub.com/doi/abs/10.3181/00379727-37-9630 https://www.businesswire.com/news/home/20250402019875/en/The-Worlds-Smallest-PPG-Sensor-Head https://pmc.ncbi.nlm.nih.gov/articles/PMC4822420/ #wearables #science #history
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lantapebiosensors
Lantape Biosensors @lantapebiosensors@mstdn.business · Aug 03, 2026
🧠 Award-Winning Innovation in Ear-Based Sensing Industry experts in wellness and healthcare trust LanTape Biosensors. Our ear-derived photoplethysmography (PPG) technology provides superior accuracy compared to wrist-based wearables, delivering clinical-grade data in consumer-friendly earbuds. USA & Spain based | Complimentary consultations available 💼 🔗 Get started today: https://lantapebiosensors.com/ #HealthTech #Wearables #PPG #HealthcareStartUp #Biotech #Innovation #EarBasedSensing
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