Merk, the way people used to "hack" arcade machines were by plugging in a USB keyboard and a USB drive with a portable operating system into the front USB slots. During a machine reboot, just like with any computer, you'd press esc (for function key) on the USB keyboard and go to the boot menu where you could then boot from the rogue OS. From there you can do anything: copy over songs, full length feature films, and modify the metrics by adding a step combination code that gives you a free game. Hell you could even delete Bumble Bee.
Riot I just think ITG players get a bad rap sometimes, so I wanted to share this. Hopefully your perception of us has changed.