My daughter just loves her new journal book from SmitCo LLC. Thanks for this opportunity to have the chance to try this cute project. This notebook set comes with a passcode lock and an invisible ink pen with a black light top to keep her secrets safe in a cute diva design.The notebook has a secret passcode and easy push buttons with numbers so your daughter can set her own passcode. It comes with stickers that allows her to personalize the design. This diary is perfect for any girls who want to keep some secrets. If you or someone you know loves to write in a diary, this would be perfect gift for them.