Essentially, a Prizm wallet is your private key.
It is the private key that gives access to the encrypted database and allows you to make changes in this database!
Your wallet is not installed on your phone or computer - your wallet is stored in your documents in a cropped form. This is your private key. Having a full private key, you can go to your wallet from any device from anywhere in the world and make any balance change operations there.
Anyone who has a full private key owns a Prizm wallet!