It's a solar-powered laptop.
Ok, solar recharge is just one of the options but it's very cool.
Actually, the solar panel is located behind the screen so the solar recharge works best when the laptop is closed.
But that's not the most unusual thing about this computer.
This computer is equipped with an actual, real CT card!
And that's something very unlikely to find in a typical computer.
It's what allows you to communicate with the outside world.
But communicating with the world is not what you have been using the computer for right now.
You just finished writing some changes to keep_on_tracking.c