Further afield, a spate of shark attacks in recent years in Hawaii that resulted in the first shark-attack deaths in the state since 2004, spurred sales of personal electric deterrent devices that promise to help keep the predators away, with swimmers and surfers strapping devices that emit electric pulses to their ankles or to their surf boards.
Ships have also tried setting up deterrent devices on board; however these are not ideal when dealing with pirates who have proved to be highly adaptive in their approach.
Experts call these things Acoustic Deterrent Devices (ADDs) or "acoustic pingers".
At worst, Evzio's high out-of-pocket price could be a major access deterrent for the device; at best, it could create a two-tiered system of access, giving access to those who have good quality insurance and are legitimately prescribed opioids, while leaving out users who are uninsured, who get pills by illicit means, or who use heroin instead.
Company officials said there are situations where it doesn't work and they stress that the device is a deterrent, not a barrier.
Simply acknowledging the device has a deterrent effect.
And Kahn later proposed a doomsday device as the ultimate deterrent: threatening the extinction of human, animal, and plant life, he believed, would end the dangerous brinkmanship displayed by the Soviet Union and the United States in the Cuban missile crisis.
Doing this serves as both a tracking device and a theft deterrent.
Normally, sea mines are stationary interdiction devices, acting as a deterrent to keep hostile ships from entering strategically important zones.
The case has raised concerns about the effectiveness of GPS devices as a crime deterrent.
