Battery-free smart home sensors are smaller than a penny

Battery-free smart home sensors are smaller than a penny

Summary

Researchers have created simple metal tags with unique ultrasonic fingerprints to detect door openings and other movements.

Description

Researchers have created simple metal tags with unique ultrasonic fingerprints to detect door openings and other movements.

Original reporting

AFBytes is a read-only aggregator. Use the original source for full context and complete reporting.

Open original source

Related coverage