Considering how much the PlayStation Network breach cost Sony, it’s kind of crazy that the service didn’t offer two-factor login authentication before now. But, that’s no longer the case. Protecting your PlayStation account is SMS-based (which has its own limitations) versus using an authenticator app, however. You can set up device passwords for the PlayStation 3 and Vita handheld, and, really, from there it doesn’t differ much than you’re used to with other apps and services.
Xbox One has had something similar for a few years, but hey, with how susceptible seemingly every service is to ne’er-do-wells these days, a late arrival for the feature is definitely preferable to never getting it at all