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Sponsored AI Networking Cookbook: Practical recipes for AI-assisted network automation and development AI Networking Cookbook: Practical recipes for AI-assisted network automation and development

Author

Raj Nandini

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Open access Aug 2026

Smartphone Acoustic Sensing for Contactless Respiration Monitoring and Gesture-Based Authentication

This paper presents a smartphone-based sonar-sensing system for contactless monitoring of respiration and gesture-based user activity, using a single commercial phone with no hardware modification. A 20 kHz audio signal is transmitted from the phone’s speaker and reflections are captured by its microphone; motion-induc...

Raj Nandini, Ashish Mishra · 0 citations

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