Omni-tools

Omni-tools are multipurpose diagnostic and manufacturing tools as well as computers used for a variety of civilian and battlefield tasks, such as hacking, decryption, or repair. Higher-end omni-tools are equipped by Engineers, Sentinels, and Infiltrators to make use of their tech talents. When activated, an omni-tool can appear over either of a person's forearms and hands, or occasionally over both, as an orange hologram.

Omni-tools
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Omni-tool Weapons
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Known Functions

 * Scanner
 * Programming and hacking
 * Repairing items
 * Dispensing Medi-gel
 * Flashlight
 * Camera
 * Video, audio and holographic communication
 * Downloading and playing video games
 * Converting items into omni-gel
 * Applying upgrades to items
 * Melee Weapons
 * The Soldier class can extend an "omni-blade" from the omni-tool, and use it to impale an opponent.
 * The Infiltrator class shapes the omni-tool into a forked "omni-blade" with the addition of an electrical current.
 * The Engineer class activates an incendiary attack with the omni-tool before backhanding an enemy.
 * The Sentinel class extends "omni-blades" from omni-tools on each arm to slash an opponent.

Omni-tool Models
These omni-tool models are available in Mass Effect. They can be purchased from merchants, obtained during battle, or recovered by hacking storage containers.

In addition to the standard classes, squadmates Kaidan Alenko, Tali'Zorah nar Rayya, Garrus Vakarian, and Liara T'Soni may equip upgraded omni-tools. Classes without specialization with them still use them for administering first aid or activating other non-biotic non-weapon talents, but cannot make use of higher-end omni-tools.

Trivia

 * In the PC version, certain omni-tools may be found which contain no manufacturer. Though these tools have no description or name aside from their grade, they are Polaris omni-tools (see above) produced by Kassa Fabrication.
 * A Savant omni-tool (the level of the tool received varies on your current character level) can be obtained at the completion of the Bring Down the Sky DLC, from Simon Atwell.