InPen smart insulin pen system and Guardian Connect system: Mattie's story Posted by Alexis Papayanakos on August 31, 2021 I am Mattie and I have been living with type one diabetes for 20 years. One of the greatest tools I now have in my diabetes toolbox is the combination of my InPen smart insulin pen system and the Guardian Connect continuous glucose monitor. Read more about InPen smart insulin pen system and Guardian Connect system: Mattie's story Alexis.Papayanakos's Blog Add new comment