How to find the Serial Number for the Probe in Directive 8020

Just as you think you've made it through a tense episode of Directive 8020, you hit a puzzle that requires a key code to progress. Whether you've decided to send a distress signal or a warning to Earth in episode 7, you'll still need to find the serial number for the probe. It's not exactly hidden in plain view either.

Much like every other key code you need to find throughout the game, you need four numbers to progress to the next part of the story. Rather than being a huge elaborate puzzle to solve...