technology that incorporates the use of electromagnetic or electrostatic coupling in the radio frequency 

a matrix code that allow its contents to be decoded at high (quick) speed

household goods that depend  on electronic components (semiconductors, etc) microwave oven? for example

is a technology that in its most general form can be defined as miniaturized mechanical and electro-mechanical elements

a discipline that brings intelligence to our everyday environments and makes those environments sensitive to us

a system that enables to detect and respond to some type of input from the physical environment, teperature for example