IPA: /ˈpæski/
KK: /ˈpæski/
A special code or key used to gain access to a secure area or system, often in the context of technology or security.
You need a passkey to enter the secure building.
Passkey → It is formed from "pass" (from Old French *passer*, meaning to go or move) and "key" (from Old English *cæg*, meaning a device for opening locks). The word "passkey" refers to a key that allows one to go through or access a secured area.
Think of a 'key' that helps you 'go through' or access something — that's what a passkey does.
No commonly confused words.