---
title: udiDeviceIdentifier
framework: healthkit
role: symbol
role_heading: Instance Property
path: healthkit/hkdevice/udideviceidentifier
---

# udiDeviceIdentifier

The device identifier portion of the US Food and Drug Administration’s Unique Device Identifier (UDI).

## Declaration

```swift
var udiDeviceIdentifier: String? { get }
```

## Discussion

Discussion The UDI identifies medical devices. You can look up additional information about the device at AccessGUDID. For more information, see FDA Unique Device Identification.

## See Also

### Accessing Data About a Device

- [firmwareVersion](healthkit/hkdevice/firmwareversion.md)
- [hardwareVersion](healthkit/hkdevice/hardwareversion.md)
- [localIdentifier](healthkit/hkdevice/localidentifier.md)
- [manufacturer](healthkit/hkdevice/manufacturer.md)
- [model](healthkit/hkdevice/model.md)
- [name](healthkit/hkdevice/name.md)
- [softwareVersion](healthkit/hkdevice/softwareversion.md)