The keyhole is traditionally read as curiosity and a glimpse of something hidden. Peering through one points to wanting to know more than you have been told.
Where in your waking life have you met something like this lately?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.