Maximizing Smartphone Battery Life Under Continuous Urban Walking

Using step-counter hardware interrupts and low-power GPS geofences so the phone only broadcasts safety beacons when the user is moving outdoors near roads.

Indoor Geofenced Sleep Modes

When inside shopping malls, offices, or parks, the V2P daemon sleeps entirely, ensuring zero phantom battery consumption during daily sedentary hours.

Smartphone daily battery impact strictly below 1.5% of full charge.
Instantaneous wake-up within 50 ms upon stepping into sidewalk zones.
Cryptographic pseudonym token rotation protecting user privacy.
Adherence to 3GPP Rel-16 Proximity Services (ProSe) standards.

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