Of course these are not the only ways to control and monitor fuel! There is fuel management systems which are computer programs linked directly to the tank that recorded everything. These often offer other anti-theft and anti-siphoning protections as well.
Fuel Management Systems 101
There have been many advances and changes to fuel management systems over the years. As the technology continues to improve, so will the fuel management systems, making use of GPS and the internet while interfacing with other software programs. In general there have been 4 generations of fuel management systems.
4 Generations of Fuel Management Systems
First generation: Electromagnetically counters, basically a shaft driven encoder attached to the pump. These were used throughout the 1960s but by the late 1970’s they were replaced by better systems.
