New techniques focus on specialized antenna design that utilizes the metal interference and signal reflection for longer read range than similar sized tags attached to non-metal objects.
[1] RFID-on-metal transponders will continue to create new opportunities for users in a wide range of asset tracking and broader industrial applications.
RuBee is often used when RF based systems have challenges in harsh environments especially on and near steel and metal.
Because it is magnetic it has no multipath reflections so no nulls, and is not blocked by steel, water, snow or dirt.
RuBee is in widespread use in industrial environments (over 1,500 sites) on heavy machinery (Injection Molding Machines and Tools[4] ), in armories[5] and many defense[6] applications.