LazyDr: Reading the information in the link provided in the OP, they state that the device detects that it's in flight and switches off automatically. Not sure on exactly how that's supposed to work, but that's what they claim

from the website: Trakdot’s artificial intelligence shuts off its transmit-and-receive capability and enters “airplane mode” by employing solid-state accelerometer technologies that sense the sustained acceleration of an airplane during taxi and/or the approximate first third of takeoff roll. Trakdot™ is in airplane mode or “sleep mode” well before the aircraft is airborne.

if you're running late to get to the airport, don't speed! :-)