Duper easy to use and is pretty secure. You might not want to leave this out in plan sight because the fake paper looks very plastic however if you put it on a bookshelf who other books it will blend right in

I purchased this as a birthday gift for my young son. However, he didn't want it so unfortunately it was returned. But it arrived neatly packaged and was very sturdy and looked great. I almost kept it myself :) I did not comment on the lock as I did not use it.