Harsh Environment Tags (HET) Harsh Environment Tags (HET) Secure passive tags with accurate (cm resolutions) localization capability with portal readers Battery-free Unlimited lifetime, environmentally safe Specifically designed for reliable operations in harsh RF propagation environments – metallic objects, clutter, electromagnetic interference Long range, up to 100 ft., depending on size and operational environments; storage, docking, and transportation applications are addressed. Authenticated tags Accurate localization with <10 cm resolution Accurate tracking Resistant to Gamma radiation and high doses of fast neutron radiation Passive (battery-free) tags Accurate localization of assets with <10 cm resolution