It occurs to me that I can store a lot of non-public things in gmail because I believe in the security of my password. But anyone with access to my cellphone has access to my email, without a password. So does that mean I believe a password secures my email digitally at least as much as possession secures my phone physically? Given that I’m not a ninja, but also that I use secure passwords, I have to think my digital life is the more secure. But I access my phone too often to make a PIN worthwhile—I’d get fed up with the barrier before one day was through. (I know this because I’ve tried. More than once)
So how can I keep my phone open and keep personal stuff in the cloud? One solution would be the ability to tag a message “secure.” The tag would require me to re-enter my password before viewing that message (like how my ATM re-asks for my PIN when I go to get cash after I deposit).