---
title: OCKContactControllerProtocol
framework: CareKit
role: symbol
role_heading: Protocol
platforms: [iOS 13.0+, Mac Catalyst 13.0+, watchOS 7.0+]
path: carekit/ockcontactcontrollerprotocol
---

# OCKContactControllerProtocol

An object that tracks and updates the state of a contact.

## Declaration

```swift
protocol OCKContactControllerProtocol
```

## Topics

### Observing Objects

- [objectWillChange](carekit/ockcontactcontrollerprotocol/objectwillchange.md)
- [store](carekit/ockcontactcontrollerprotocol/store.md)

### Initiating Contact Actions

- [initiateAddressLookup(completion:)](carekit/ockcontactcontrollerprotocol/initiateaddresslookup(completion:)-9s05w.md)
- [initiateCall()](carekit/ockcontactcontrollerprotocol/initiatecall()-5msc.md)
- [initiateEmail()](carekit/ockcontactcontrollerprotocol/initiateemail()-khw.md)
- [initiateMessage()](carekit/ockcontactcontrollerprotocol/initiatemessage()-7nqj0.md)
- [initiateSystemContactLookup()](carekit/ockcontactcontrollerprotocol/initiatesystemcontactlookup()-v8dh.md)

## Relationships

### Conforming Types

- [OCKContactController](carekit/ockcontactcontroller.md)

## See Also

### Contact View Changes

- [OCKContactViewControllerDelegate](carekit/ockcontactviewcontrollerdelegate.md)
- [OCKContactsListViewControllerDelegate](carekit/ockcontactslistviewcontrollerdelegate.md)
- [OCKContactViewDelegate](carekitui/ockcontactviewdelegate.md)