--- title: Best IEEE Spectrum posts — October 2025 | daily.dev description: The most upvoted IEEE Spectrum posts from October 2025, curated by the daily.dev community. canonical: https://daily.dev/sources/ieeespectrum/best-of/2025/10 twitter:card: summary_large_image twitter:site: @dailydotdev og:url: https://daily.dev/sources/ieeespectrum/best-of/2025/10 og:type: website og:site_name: daily.dev og:title: Best IEEE Spectrum posts — October 2025 | daily.dev og:description: The most upvoted IEEE Spectrum posts from October 2025, curated by the daily.dev community. og:image: https://media.daily.dev/image/upload/s--VAY5ToZt--/f_auto/v1724209435/public/daily.dev%20-%20open%20graph --- # Best of IEEE Spectrum — October 2025 1. 1 [](https://daily.dev/posts/wi-fi-signal-tracks-heartbeat-without-wearables-lpwltj3me "Wi-Fi Signal Tracks Heartbeat Without Wearables") Article IEEE Spectrum·48w Wi-Fi Signal Tracks Heartbeat Without Wearables Researchers at UC Santa Cruz developed Pulse-Fi, a system that uses ambient Wi-Fi signals to monitor heart rate without wearables or cameras. The AI-powered approach runs on affordable devices like Raspberry Pi or ESP32 microcontrollers, filtering signal amplitude changes caused by heartbeats. Testing with over 100 participants showed less than 1.5 beats-per-minute error rate across various postures and distances up to 10 feet. The team is now working on multi-user support and exploring applications for sleep apnea and breathing rate monitoring. 69 6 2. 2 [](https://daily.dev/posts/where-was-this-photo-taken-ai-knows-instantly-l25oy4ah7 "Where Was This Photo Taken? AI Knows Instantly") Article IEEE Spectrum·46w Where Was This Photo Taken? AI Knows Instantly Researchers developed a machine learning model that matches street-level photos to aerial images for geolocation with 97% accuracy in initial narrowing and 82% for exact location. The system uses deep cross-view hashing with vision transformers to convert images into unique numerical fingerprints, making it twice as fast and using one-third the memory of competing models. The approach could benefit navigation systems when GPS fails, emergency response, and defense applications, though it needs further testing for real-world challenges like seasonal variations and cloud cover. 21 2 3. 3 [](https://daily.dev/posts/real-time-audio-deepfake-tech-is-here-rt49hcqso "Real-Time Audio Deepfake Tech Is Here") Article IEEE Spectrum·46w Real-Time Audio Deepfake Tech Is Here Real-time audio deepfakes have become a reality, enabling convincing voice impersonation with zero latency using open-source tools and consumer-grade hardware. NCC Group demonstrated a system that successfully fooled targets in voice phishing attacks by combining AI voice cloning with caller ID spoofing. The technology works on laptops with entry-level GPUs and requires only a button press to activate. While video deepfakes are advancing rapidly through models like Alibaba's WAN 2.2 and Google's Gemini Flash 2.5, they still lack real-time capability and show telltale signs like mismatched emotions. Security experts recommend developing alternative authentication methods beyond voice and video verification. 11 1 [See all IEEE Spectrum archives](/sources/ieeespectrum/best-of) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@graph":[{"@type":"CollectionPage","@id":"https://daily.dev/sources/ieeespectrum/best-of/2025/10#page","url":"https://daily.dev/sources/ieeespectrum/best-of/2025/10","name":"Best IEEE Spectrum Posts — October 2025","description":"The most upvoted IEEE Spectrum posts from October 2025, curated by the daily.dev community.","isPartOf":{"@type":"WebSite","url":"https://daily.dev"}},{"@type":"ItemList","@id":"https://daily.dev/sources/ieeespectrum/best-of/2025/10#items","numberOfItems":3,"itemListElement":[{"@type":"ListItem","position":1,"url":"https://daily.dev/posts/wi-fi-signal-tracks-heartbeat-without-wearables-lpwltj3me","name":"Wi-Fi Signal Tracks Heartbeat Without Wearables"},{"@type":"ListItem","position":2,"url":"https://daily.dev/posts/where-was-this-photo-taken-ai-knows-instantly-l25oy4ah7","name":"Where Was This Photo Taken? 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