Nuance Audio glasses have hearing aids built into them. They're expensive but actually work for people with mild hearing loss.

Abstract: Symbiotic radio (SR), combining the advantages of cognitive radio and ambient backscatter communication (AmBC), stands as a promising solution for spectrum-and-energy-efficient wireless ...

Abstract: The need for efficient and high-performance energy harvesting systems is rising to power modern wearable smart devices. Several energy sources can be harvested such as thermal, vibrational, ...