Kill switch
This article is for the security device called a kill switch. You may also have been looking for the video game Kill.Switch.
A kill switch is a security device used to shut off a device in an emergency situation in which it cannot be shut down with normal procedure. Unlike a normal shut down, which is generally designed to turn the machine off without damaging it, a kill switch is designed to abort the operation if at all possible.
A similar system is used to shut down vehicles and machinery if the operator loses control or is ejected. Athough sometimes referred to as kill switches, they are more accurately called dead man's switches.
A kill switch is also used for gasoline pumps or any other device that pumps large amounts of explosive or flammable chemicals. There is commonly a single kill switch for all pumps at a pumping station.
Kill switches are also used on land vehicles as an anti-theft device and as an emergency power off.