English to Spanish Tech/Engineering IT (Information Technology) vocabulary

No llego a entender que significa Identity en esta oración:
MANAGE IDENTITIES
Identities are different subsets of passwords from which you can seamlessly switch back and forth. You can create an identity called “home” or “work”, anything that will help you to manage your passwords.
Son subgrupos de contraseñas??' No me parece que sea asi pero no le encuentro la vuelta
Gracias