If you have ScanBizCards installed on multiple devices, you can keep them all in sync.
Make sure that you have a WebSync account and that cards from your primary device have been backed up from WebSync. More information on backing up your cards can be found here: https://circleback.zendesk.com/entries/110090483-Are-my-cards-backed-up-anywhere-
On your other devices, make sure you enter your WebSync credentials in the app. Once logged in, your cards will sync down from WebSync, keeping all of your devices up-to-date.