I'm an addict when it comes to online subscriptions, one of which I was starting to get annoyed with because nothing ever appealed to me and decided to unsubscribe to. As I was doing this, I for once found something. Digital Message Tape. It retails for 10$ and is totally worth it since the pen comes with the tape.
Using the included pen, you can "black out" the full alphabet plus digits, all in stylish digital type.