Inclusion Criteria:  Type 1 or type 2 diabetes diagnosis HCP-prescribed, registered Bigfoot Unity users who have used the Bigfoot Unity System 2 weeks or less Age 12 years or older at time of electronic informed consent Using both long-acting and rapid-acting insulins that are compatible for use with the Bigfoot Unity System Using long-acting insulin no more than 1 time per day Able to read and understand English Participant or legally authorized representative for minors has the capacity to provide electronic informed consent Resident of the United States  Exclusion Criteria:  Females who are pregnant or intending to become pregnant during participation in the study Persons with implantable medical devices such as pacemakers Persons on dialysis or other serious medical conditions that would impact the ability to use the device or manage their diabetes Persons taking or expected to be taking >500mg Vitamin C supplements on routine basis Persons employed by the Sponsor or JCHR