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# CNKeyDescriptor

This protocol is reserved for Contacts framework usage.

```
protocol CNKeyDescriptor : NSCopying, NSSecureCoding, NSObjectProtocol
```

## Relationships

### Inherits From

[`NSCopying`](/documentation/Foundation/NSCopying)

[`NSCoding`](/documentation/Foundation/NSCoding)

[`NSSecureCoding`](/documentation/Foundation/NSSecureCoding)

[`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol)

---

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