How to Unlock Doors with Techno-Keys for Narita Boy

How to Unlock Doors with Techno-Keys

To determine whether a Techno-Key in Narita Boy will unlock a door you simply have to match it up with the artwork on it's floppy disk label. This basically means if you are ever unsure as to what door the Techno-key you have unlocks you just need to look at the shape of the door and the pattern on the artwork of the floppy disk label and if they are the same you have the correct key for that door.