---
title: HMCharacteristicPropertyRequiresAuthorizationData
framework: homekit
role: symbol
role_heading: Global Variable
path: homekit/hmcharacteristicpropertyrequiresauthorizationdata
---

# HMCharacteristicPropertyRequiresAuthorizationData

A variable that specifies that the characteristic requires authorization data to write.

## Declaration

```swift
let HMCharacteristicPropertyRequiresAuthorizationData: String
```

## See Also

### Safety and security

- [HMCharacteristicTypeCurrentSecuritySystemState](homekit/hmcharacteristictypecurrentsecuritysystemstate.md)
- [HMCharacteristicTypeTargetSecuritySystemState](homekit/hmcharacteristictypetargetsecuritysystemstate.md)
- [HMCharacteristicTypeObstructionDetected](homekit/hmcharacteristictypeobstructiondetected.md)
- [HMCharacteristicTypeOccupancyDetected](homekit/hmcharacteristictypeoccupancydetected.md)
- [HMCharacteristicTypeSecuritySystemAlarmType](homekit/hmcharacteristictypesecuritysystemalarmtype.md)