Technology1980s-2000sUnited Stateslow confidence

The FCC spectrum policies developed by Michael Marcus helped pave the way for early generations of Wi-Fi as well as the Bluetooth and ZigBee protocols.

Notes on verification

Corroborated by Wikipedia, CommLawBlog, and IEEE MTT-S professional bio, all independent of the original obituary source. Consistent attribution of FCC's 1985 spread-spectrum ISM band rules to Marcus as foundational for Wi-Fi, Bluetooth, and ZigBee.

Sources