The Omnitool is a smart access computer, all-in-one-purpose tool created and manufactured by Haimatsu. It is an inventory item in SOMA, acquired early in the game in Upsilon. It allows Simon Jarrett to access the PATHOS-II mainframe.
The Omnitool is mostly made of metal and plastic, with most of the color being grey with yellow highlights, aside from a red lacquer covering most of the device. The shape of the device is like that of feature phones, with the display heading the device smaller but wider. There is an antenna on the top of the device, along with exchangers below it, various diodes, two tuners next to the display of unknown purpose, a rubber grip covering the right side of the body of the device, and a battery slot and safety switch on the back.
The Omnitool can interface and operate with all of the systems throughout PATHOS-II, however the only use made out of it by Simon throughout the game are getting through doors, with Simon even referring to it mostly as just a "door opener." The current version of the Omnitool used all over PATHOS-II is v2.5, with the one used by Simon belonging to Field Service Technician Louise Meuron.
The Omnitool is a small handheld computer, created by Haimatsu, originally used by PATHOS-II's staff to open doors and access areas requiring maintenance. It has two chip slots: one for a Tool Chip, which grants additional functions and security clearances, and one for a Cortex Chip, which is used to download an A.I. and protocols into the Omnitool. If no Cortex Chip is inserted, the Omnitool has a pre-loaded AI, "Helper Jane."
The Cortex Chip can also contain a brain scan, granting it the personality and memories of the person scanned, even though it's unknown if this functionality was intended.
The Omnitool lacks the necessary computational resources to run brain scan simulations on it's own, and must be docked to a terminal in order to do so. Catherine Chun describes this experience as a continuous, but disjointed consciousness with no perception or awareness of the time that passes in between simulations.
The Omnitool cannot be used to override security protocols that it lacks the clearance to access. In these cases, a new Tool Chip must be inserted to update the Omnitool's security clearances.
The Omnitool can be operated either by swiping it in front of a sensor or by directly docking it to a computer terminal. The latter option allows the brain scan on the device's Cortex Chip, if present, to directly interface with the PATHOS-II mainframe.