I was testing Parse out last week before I discovered App42 Cloud and one thing I liked about it was that once a user logged in, they stayed logged in unless you specifically logout. So when the user opens the game again, they are already logged in. This was built in and automatic, so I don't know how they did it. I guess they cached the username and password and logged them in as soon as the game started.
How could I achieve this with App42 Cloud? I'm using Unity. I know I could save the username and password in PlayerPrefs and log them in that way, but is that a good idea? It seems like that may not be a good way to do it, especially saving the password like that. How would you accomplish this?