In the “olden days” (read: our youth), kids kept their most personal secrets with a whisper of a pen, safeguarded by a built-in miniature padlock, standard issue for private paper diaries.

But let’s be honest, those locks were easily circumvented, often with a paperclip or a bobby pin, should parents (or nosy siblings) have a gut feeling that there was something “juicy” hidden inside.

Now that we’re in the technological age, digital files hold secrets, and vault apps hide those secrets from prying eyes.