Abstract Adoption of wireless communications using radio wave frequencies is closely associated with critical infrastructure sectors and services like transportation, utilities, public safety, law enforcement, national defense, and news media. Consumer applications started with the use of radio in the early 20th century, gathering momentum as content quality and variety increased (entertainment as well as news updates) and radios became a standard piece of living room furniture. The invention of the transistor in 1947 offered the promise of mobility and suggested innovative uses like tagging wildlife for tracking. In the 21st century, it is we who are increasingly tagged by our smart and chatty devices, exposing us to the potential for undesirable disclosure of our location and personal information through proliferation of “attack surfaces.” Globally, wireless penetration rates vary, with some countries bypassing wireline telecommunications in favor of wireless. Keywords