What is a HWID?
HWID (or Hardware ID) is an identifier assigned to the device by Pushwoosh SDK.
Starting with iOS 7 Pushwoosh SDK hwid is based on either IDFV or IDFA depending on the application settings (whether the app is using Ad Framework). If you do not use the Advertisement Identifier in your application for advertising, do not link the AdSupport.framework, and Pushwoosh will use IDFV instead of IDFA.
Also, it should be mentioned that if any third party plugin within the app uses Ad Framework ( has
-framework "AdSupport"), Pushwoosh SDK will use IDFA for HWID.
iOS HWID example (only upper case!):
For Android devices it's usually Android ID.
Android HWID example: