---
title: key
framework: contacts
role: symbol
role_heading: Instance Property
path: contacts/cncontactproperty/key
---

# key

The key of the contact property.

## Declaration

```swift
var key: String { get }
```

## Discussion

Discussion This property is used for properties that may or may not be in labeled arrays.

## See Also

### Getting the Property Information

- [value](contacts/cncontactproperty/value.md)
- [label](contacts/cncontactproperty/label.md)
- [identifier](contacts/cncontactproperty/identifier.md)