---
title: deviceVerificationID
framework: storekit
role: symbol
role_heading: Type Property
path: storekit/appstore/deviceverificationid
---

# deviceVerificationID

The device verification identifier to use to verify whether signed information is valid for the current device.

## Declaration

```swift
static var deviceVerificationID: UUID? { get }
```

## Discussion

Discussion Use this property to verify whether an App Store-signed JSON Web Signature (JWS) is valid for the current device. The JWS may be one of the following: A jwsRepresentation representing a signed transaction A jwsRepresentation representing a signed subscription renewal information A jwsRepresentation representing a signed app transaction. To verify that the JWS is valid for the current device, follow these steps: Append the lowercased UUID string representation of this property, deviceVerificationID, after the lowercased UUID string representation of the device verification nonce. For a transaction, the nonce is deviceVerificationNonce. For subscription renewal information, the nonce is deviceVerificationNonce. For an app transaction, the nonce is deviceVerificationNonce. Compute the SHA-384 hash of the appended UUID strings. Verify that the SHA-384 digest is equal to the device verification property. For a transaction, the device verification property is deviceVerification. For subscription renewal information, the device verification property is deviceVerification. For an app transaction, the device verifcation property is deviceVerification.