I hadn't heard of these "kinetic switches" either. Had a quick google - they seem to be marked by a single main company "ENERJ SMART LTD" trading as "EnerJ". They look like common remote-control switches i.e. wireless control via RF/wifi. Are they something different?
No wifi needed, as above the action of pushing the switch creaes a micro pulse of energy that actuates the light or whatever you want to switch.