In general usage, a device used to connect to a network.
Each section of the Big Shell contained at least one node. Each node consisted of a terminal allowing the user to connect to a computer support network.
The data provided by these nodes enabled the user to view a map of the Big Shell as well as use the Soliton Radar inside the facility.
The nodes were security-protected, but the nanomachines in Raiden's body automatically disabled this protection.