> ## Documentation Index
> Fetch the complete documentation index at: https://devdocs.xbox.com/llms.txt
> Use this file to discover all available pages before exploring further.

# ILampArray::GetDeviceId method

> Returns the system-generated device identifier string for a connected LampArray peripheral, used to distinguish it from other attached devices.

# ILampArray::GetDeviceId

Returns the system-generated ID for the ILampArray.

## Syntax

```cpp theme={null}
void GetDeviceId(
    APP_LOCAL_DEVICE_ID* deviceId)
```

### Parameters

*deviceId*  \_Out\_
Type: APP\_LOCAL\_DEVICE\_ID\*

A pointer to an APP\_LOCAL\_DEVICE\_ID struct, into which the device ID will be copied.

### Return value

Type: void

## Remarks

The *application-local device ID* is a special 32-byte value that uniquely identifies the device, even across restarts of the application or reboots of the system. This ID is also stable across disconnects and reconnects of wireless devices, and wired USB devices as long as they are plugged back into the same USB port.

For the initial release, this function will populate an all-zero value.

## Requirements

**Header:** LampArray.h

**Library:** xgameplatform.lib

**Supported platforms:** XBOX One family consoles and XBOX Series consoles

## See also

[Lighting API Overview](/build/core-features/common/lighting/gc-lighting-toc)\
[ILampArray](/reference/lighting/lamparray/interfaces/ilamparray/ilamparray)


## Related topics

- [ILampArray::GetVendorId method](/reference/lighting/lamparray/interfaces/ilamparray/methods/ilamparray_getvendorid.md)
- [ILampArray::GetLampArrayKind method](/reference/lighting/lamparray/interfaces/ilamparray/methods/ilamparray_getlamparraykind.md)
- [ILampArray::GetIsEnabled method](/reference/lighting/lamparray/interfaces/ilamparray/methods/ilamparray_getisenabled.md)
- [ILampArray::GetProductId method](/reference/lighting/lamparray/interfaces/ilamparray/methods/ilamparray_getproductid.md)
- [ILampArray::GetBoundingBox method](/reference/lighting/lamparray/interfaces/ilamparray/methods/ilamparray_getboundingbox.md)