The Scan Visor has been around throughout the Metroid Prime Series and other titles. It is used to scan things in the environment for information, unlock doors, and others.
 Metroid Prime
Metroid Prime was the first game in which the Scan Visor appeared. It was used in the game for getting information, unlocking various doors, finding hidden passageways, and more.
 Metroid Prime Hunters
The Scan Visor appeared for the second timein Metroid Prime Hunters and you were able to get more of a since for scanning stuff, do to the touch screen capabilities of the Nintendo DS.
 Metroid Prime 2: Echoes
In Metroid Prime 2: Echoes the Scan Visor was somewhat similar to that in previous titles. The Scan Visor was used for unlocking doors and finding hidden passageways.
 Metroid Prime 3: Corruption
Metroid Prime 3: Corruption is of of the more recent games in which the Scan Visor has appeared. This game also started using motion control because of the Wii. This made the Scan Visor much more fun to use than in previous titles. Also, this game had countless items to scan, so scanning was alot more fun than before.
 Metroid: Other M
Due to the game not being in a third-person perspective, the Scan Visor was optimized in Metroid: Other M. However, you did have the option to switch into a thrid-person view, and then you could scan things, but there are far less things to scan than in previous titles.
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