The Portable Efficient Sticky Notes application will allow various background colors, with optional gradient effect, to be set for the sticky notes. You can also customize the font of each note and set it to be semi-transparent so it will not fully cover up your desktop background or icons. To fully protect your privacy, the software encrypts the login password with the irreversible SHA algorithm and also encrypts data files. Besides, it offers various special features such as managing sticky notes by group, setting note importance, tracking the creation time and last modification time of notes, adding attachments to notes, Recycle Bin, etc.