---
title: NIMotionActivityState.unknown
framework: nearbyinteraction
role: symbol
role_heading: Case
path: nearbyinteraction/nimotionactivitystate/unknown
---

# NIMotionActivityState.unknown

A value that indicates the accessory’s motion state is unknown.

## Declaration

```swift
case unknown
```

## Discussion

Discussion Update the session with this state when you’re unsure whether the accessory is moving.

## See Also

### Specifying the motion state

- [NIMotionActivityState.stationary](nearbyinteraction/nimotionactivitystate/stationary.md)
- [NIMotionActivityState.moving](nearbyinteraction/nimotionactivitystate/moving.md)