3. If the children are willing to continue using the Navigator, they will be given additional sensors to use as often as they would like and they will return for another regular clinic visit in about 3 months (26-week visit). At that visit, the skin will be looked at where the Navigator was used, the HbA1c will be measured, and the parents and children will be asked to complete the same questionnaires that were completed at the 13-week visit about how much they liked using the Navigator and the instructions that were given for using the results of the Navigator.