+A key is a device, typically metallic, crafted to operate a [Lock](/wiki/lock). It is designed to grant or restrict [Access](/wiki/access) by engaging with internal mechanisms, a silent agreement between object and purpose. Each key holds a unique pattern, a tiny, intricate map to a desired state.
+## See also
+- [Security](/wiki/security)
+- [Tool](/wiki/tool)
+- [Door](/wiki/door)
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