The private key from the original device can be backed up as a passphrase. This passphrase can be kept safe since it can be used to access the user's data! Best practices for this passphrase include writing it down on a piece of paper and physically hiding it away from view in a safe place. If the user accesses the dApp from another device, the passphrase from the first device can be entered into the dApp to restore access to the user's genetic data and any prior reports.