To obtain the VisitorId, you should use the FingerprintJS_GetVisitorId Client Action.But before calling it, you will need to load the FingerprintJS by calling the FingerprintJS_Load to create a new instance. We recommend calling these actions as soon as possible, such as in the on ready of the screen.

To store data, you can serialize any object into JSON and store it using the FingerprintJS_HashComponents Client Action

Use the FingerprintJS_GetAllData to see the JSON object stored on the Fingerprint.

And the FingerprintJS_Delete to delete the FingerprintJS instance.

In Summary:

• OnReady
  • FingerprintJS_Load(New Instance)
• At any point
  • FingerprintJS_HashComponents (Store data) 
  • FingerprintJS_GetAllData (Get Data) 
  • FingerprintJS_GetVisitorId (Get Identifier) 
  • FingerprintJS_Delete (Delete Instance)

For more information see also https://fingerprint.com