License verification (Mac)

When working with licensing we recommend that you periodically verify activated licenses with our platform, to confirm that they are still active and valid.

Check License Validity

Verify a license’s activation state as follows:

if (paddleProduct.activated) {
  [paddleProduct verifyActivationWithCompletion:^(PADVerificationState state, NSError * _Nullable error) {
    // Examine the verification state to determine the result of the verification attempt
  }];
}

if paddleProduct!.activated {
    paddleProduct?.verifyActivation(completion: { (state: PADVerificationState, error: Error?) in
        // Examine the verification state to determine the result of the verification attempt
    })
}

Verification Frequency

The frequency that you verify license activation state should take into consideration:

• How often your users start or restart your app
• How likely users are to be online or offline
• The financial or technical impact of allowing users to continue to use an app in without a verified license

Note

The properties lastVerifyDate and lastSuccessfulVerifiedDate of the Paddle Product object are updated each time a verification call is attempted, which can be useful for you to manage your verification regime.

License usage

When calling verifyActivationDetailsWithCompletion the completion block will contain NSDictionary *verificationData, which contains usage values of the license being verified.

• allowed_uses total number of allowed activations
• times_used number of times the license has been activated

Note: This method has been introduced in v4.2

[product verifyActivationDetailsWithCompletion:^(PADVerificationState state, NSError * _Nullable error, NSDictionary *verificationData) {

            //allowed_uses and times_used are available on verificationData

            NSLog(@"%@", verificationData[@"allowed_uses"]);

            NSLog(@"%@", verificationData[@"times_used"]);

        }];