DP has the password to my phone. And as he hosts my email account, I imagine if he really wanted to he could read my emails. It doesn't occur to me that he would, and if he did, I guess my biggest worry is him finding out how much I spend on shoes.

But it's different if he demands it, or I do. I don't think I could do it. And I don't expect him to. It's just one of those things I don't agree with, and that's me. So I get where ladybird is coming from.
We are pretty much the same. No demanding, we can get on each other computers any time. I only every log out of all of my stuff when he takes my laptop for work travel and that is more of a security measure in case someone steals it. The only thing he says is that he does not want access to the bank accounts, as he is crap with money. Yes, he has been a stoopid boy in the past, any snooping to find more stupidity takes way to much emotional energy (I know how obsessed and psycho I can become )