What is nerve gear?

Nerve Gear is a technology introduced in the light novel and anime series "Sword Art Online". It is a device worn by players that connects directly to their brains, allowing them to fully immerse themselves in virtual reality games. The Nerve Gear works by intercepting and interpreting signals from the users' brains, allowing them to control their avatar within the virtual game world using only their thoughts.

One of the most notable features of the Nerve Gear is its "Full Dive" function, which enables users to experience a completely immersive virtual reality environment in which they can see, hear, feel, and even taste and smell as if they were truly inside the game world.

However, the Nerve Gear also has significant risks, as a malfunction or hacking of the device can have potentially fatal consequences for the user. In the "Sword Art Online" storyline, players become trapped in the game world due to a hacker who alters the device's software, threatening their lives if they attempt to remove the device or if they die in the game.

Overall, while the concept of the Nerve Gear may seem futuristic and exciting, its potential dangers highlight the importance of responsible and safe development of technology.