Possible to add a password to the guest account on Mavericks? I have a very precocious four-year-old who absolutely adores computers. We gave him his own login with which we control his access carefully.

The problem is the guest account. It requires no password, so regardless of the parental controls on his account, he can always log on as guest.

Applying parental controls to the guest account defeats the purpose, as I want my houseguests to be able to use it anytime they like. I would just give them the password on their arrival.

I suppose I could disable the guest account, and create a separate account which would basically be a normal user account except named "Visitor" and with a password. But I like the automatic cleanup of the guest account, and, well, that's kind of what it's there for.

But I'm still holding out hope: is there any way to add a password to the guest account?
You actually can set a password for the guest account.

Use sudo passwd guest from the terminal.