Yes, there are a few examples from Voyager.

Janeway uses the code "Janeway-Pi-1-1-0" in the season 2 episode 17, "Dreadnought:"

> JANEWAY: Computer, initiate the self-destruct sequence. **Authorisation Janeway pi one one zero.** Set it at twenty minutes. 

and then again a few episodes later in season 2 episode 21, "Deadlock":

> JANEWAY 2: Move it, Ensign! That's an order! Computer, initiate the self-destruct sequence. **Authorisation Janeway pi one one zero.** Set at five minutes and mute voice warnings. Enable.

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Later in season 7 episode 4, "Repression," Tuvok uses the code "Tuvok pi alpha" twice:

> TUVOK: **Security override Tuvok pi alpha.**

> TUVOK: Computer, override those security restrictions. **Authorisation Tuvok pi alpha.** 

and again in season 7 episode 12, "Lineage:"

> TUVOK: Override **authorisation Tuvok pi alpha.**