Authorization code
An authorization code was an alphanumeric sequence used by militaries and civilian agencies to allow access to certain command protocols and restricted information. These codes were also known as a voice authorization code, security code, command code, command authorization code, access code, or simply password.

Some of the many uses of authorization codes including: activating and canceling auto-destruct sequences, transferring of command of a starship, accessing secured locations, ejecting a warp core, resetting primary and secondary computer systems. (; ; ; ; )

Earth 

During the 1990s, Chronowerx Industries computers might include a password feature. ()

Starfleet 

In Starfleet, the style of code varied from decade to decade. In 2365, the code was a long sequence of numbers, letters from the Human Greek and English alphabets pronounced phonetically, and colors. By the following year, the code was standardized to a form used from that point on. Typically, this included the user's name, Greek letters, and numbers. Codes were changed on a regular basis to prevent sabotage and security breaches.

Doctor Kila Marr isolated the access code of the science station on the bridge of the , thereby making it impossible to turn off the graviton pulse that was destroying the Crystalline Entity. ()

Security clearances could be deleted, as Tuvok did when he believed he was no longer fit for duty. ()

Command codes could be transferred and divided among different parties if a relevant situation arose. When Voyager was apparently being 'haunted' by a non-corporeal entity that could possess humanoids, Janeway temporarily transferred her command codes to The Doctor, as a hologram would be immune to the entity's influence; while the Doctor would not actually be in command of Voyager, he would have the authority to countermand any orders Janeway made that he could attribute to the entity's influence. When the entity deactivated the Doctor's program, the command codes automatically reverted back to Janeway. Janeway then attempted to deal with the entity by dividing her command codes between herself and Tuvok, as the entity couldn't influence two people at once, but this proved to be a bad move as the 'entity' was actually Chakotay's discorporated consciousness trying to direct Voyager away from a nebula inhabited by a race of entities that drained neural energy, one of which had possessed Tuvok. ()

Examples aboard USS Enterprise-D and -E 

2365: "Omicron-Omicron-Alpha-Yellow-Daystar-2-7" ()
2365: "Theta-Alpha-Two-Seven-Three-Seven-Blue" ()
2366: "Computer, key access 4-1-2-Mark-8-0. Picard, Jean-Luc. Starfleet priority code gamma. Decode" ()
2366/2367: "La Forge Theta-2-9-9-7" ()
2367: "1-7-3-4-6-7-3-2-1-4-7-6-Charlie-3-2-7-8-9-7-7-7-6-4-3-Tango-7-3-2-Victor-7-3-1-1-7-8-8-8-7-3-2-4-7-6-7-8-9-7-6-4-3-7-6" ()
2367: "Kappa-Alpha-4-6-0-1-7-0-4" ()
2368: "Riker-Omega-3" ()
2369: "Picard-Delta-5" ()
2369: "Jellico-Alpha-3-1" ()
2369: "Picard-Epsilon-7-9-3" ()
2369: "-Alpha-2-4-1-5-9" ()
2369: "Riker-Alpha-6-0" ()
2369: "Picard-Gamma-6-0-7-3" ()
2370: "Troi-Omega-Omega-3-1" ()
2370: "Troi-Delta-2-9" ()
2373: "Picard-4-7-Alpha-Tango" ()
2373: "Crusher-2-2-Beta-Charlie" ()
2373: "Worf-3-7-Gamma-Echo" ()
2379: "Picard, authorization Alpha-Alpha-3-0-5" ()

Examples aboard Deep Space 9 and USS Defiant 
Aboard Deep Space 9 and , authorization codes optionally included an action word related to the request being made.
 2369: "4-1-2-1- Doctor Julian Bashir" ()
 2370: "O'Brien Epsilon Alpha Molly 5-7-9" ()
 2370: "Bashir-1-Alpha" ()
 2371: "9-2-1-8-Black" ()
 2371: "Kira-Delta-5-4-7-Alpha" ()
 2371: "Sisko-Alpha-1-Alpha" ()
 2371: "Kira-Beta-2-Beta" ()
 2371: "Sisko-1-5-Destruct" ()
 2371: "Sisko-Omega-1-7-Abort" ()
 2372: "Eddington-0-6-5-Alpha-Enable" ()
 2373: "Kira-1-5-7-Alpha" ()
 2373: "Sisko-A-4-7-1" ()
 2374: "Sisko-7-1-Green" ()
 2375: "Bashir-Delta-5-7-Alpha" ()

Examples aboard USS Voyager 
Aboard the , authorization codes optionally included colors and clearance levels.
2371: "937-0176 CE", Seska's security code ()
2371: "Janeway-8-4-1-Alpha-6-5" ()
2372: "Janeway-Pi-1-1-0" ()
2372: "Engineering authorization Omega-4-7" ()

2372: "Tuvok-1-4-9-4-Lambda" ()
2373: "Janeway-Lambda-3" ()
2373: "Tuvok-4-7-7-4" ()
2373: Seska: "Zeta-1" ()
2374: "Janeway-Pi-1-1-0" ()
2374: "Tuvok-Theta-9" ()
2374: "Janeway-1-1-5-3-Red, Clearance level: 10" ()
2374: "Torres-Omega 5-9-3" ()
2375: "Seven of Nine-Omega-Phi-9-3" ()
2376/2377: "Tuvok-Pi-Alpha" ()
2377: "Janeway-Omega-3" ()
2378: "Tuvok-Sigma-4" ()
2378: "ECH-Omega-4-2" ()

Other examples 

2151: Jonathan Archer identified himself to the Interspecies Medical Exchange receptionist: "Starfleet authorization Alpha-6-4" ()
2257: Katrina Cornwell initiated a command-level override on the : "pi beta six." ()
2258:  made a ship-wide mission broadcast: "Ensign authorization code, 9-5-Viktor-Viktor-2" ()
2259: Spock overrode security protocol Omega-Beta-Nine on the : "Spock gamma-delta-two" ()
2259: Christopher Pike transferred all command functions to the Communications Station on the bridge of the : "two-four-six-eight-ten" ()
2364: several mission orders called for the acknowledgement of an order through "security code 045, code 100 alpha." ()
2376: Reginald Barclay activated a holodeck at the Communications Research Center: "Barclay-Alpha-1-7-Gamma" ()
2383: "Chakotay, Zulu, X-ray, X-ray, dash, 4, 7, 5" ()
3189: Michael Burnham reset the primary and secondary computer systems on the Discovery: "Burnham Gamma six-zero-two Epsilon Echo." ()

Bajoran
The storage lockers in the assay office aboard Deep Space 9 were secured by personal authorization codes. ()

Cardassian
Cardassian authorization codes were somewhat customizable in that high-ranking officers could add additional security checks to restrict use of their security clearances. Cardassian authorization codes were coupled with a clearance level from 1 up to 9. They could also be stated with a priority override. ()

S.G. Dukat added several such subroutines to his counter-insurgency program aboard Terok Nor; when Elim Garak attempted to imitate Dukat to shut down the program, it constantly challenged Garak to prove his identity. When Dukat later attempted to beam back to his ship while the program was running, however, he discovered one of his superiors had altered the program to prevent Dukat from escaping in the event of a Bajoran revolt. ()

2371: "Alpha Red priority mission"  A security clearance used to denote a top-secret mission that is stated with a clearance verification. ()
2371: "This is a priority one override. Clearance level 9. Authorization Dukat-5-1-1-6-Green"  Used by Gul Dukat in an attempt to abort the self-destruct sequence. ()
2371: "Garak-1-3-5-9" Allowed Garak to temporarily deactivate the force fields placed by the counter-insurgency program in level 2, permitting only him to move around the station. ()

Security identification
A security identification, also known as a security ID code, was a Cardassian identifier used while hailing a Cardassian vessel over a comm channel. It was to be spoken after the individual stated his or her name, for the person on the other end to have proof of legitimacy in order verify that person was really who they said they were. 

2370: "This is Gul Dukat, security identification ADL-4-0" ()

Clearance verification 
A clearance verification was a type of verification assigned by the Cardassian Central Command to clear a person on a top secret mission from inspection by a Cardassian patrol. The patrol would enter the clearance verification into the computer, which would state "clearance code verified". The notation would be "Clearance verification" followed by four numbers and a color. Elim Garak overheard someone stating their clearance verification at some point, and used it to convince a patrol that he and Benjamin Sisko were on a top-secret mission for the Central Command.

2371: "Clearance verification-9-2-1-8-Black" ()

Ferengi
In order to access communications aboard , the DaiMon's authorization was required for all transmissions. The access code of DaiMon Tog, the commander of the Krayton, was (in part) "Keh-ee Yoor-ee Dah-teh-ee…" ()

Klingon
A defense access code was a message that, when transmitted, caused the defensive systems of the Khitomer outpost to become inoperative. ()

Other
3188: the access code to Cleveland Bookers ship: "sticky" ()

See also

Encryption code
Security clearance
Command level authorization

External link

de:Autorisationscode
Identification technology
Computer technology