Technological Advances in Glucose Management in Older Adults

Inclusion Criteria: * Patients with age ≥ 65 years * Community-living * Clinical diagnosis of T1D * On multiple insulin injections (≥3 injection/s day) or insulin pump. Exclusion Criteria: * Use of real-time CGM in past 2 years * A1c \> 10% (since individuals with very poor glycemic control usually have barriers to optimal self-care that preclude effective use of technology) * Use of insulin pump that cannot be uploaded for CDS * Unable or unwilling to perform task needed for study participation during the run-in period * Severe vision or hearing impairment that could interfere with study tasks * Need to use acetaminophen on regular basis (since can interfere with CGM accuracy) * Living in an institutional setting (e.g. group homes, nursing homes) * Terminal diseases with life expectancy \< 1 year (e.g. malignancy) * Severe comorbidities that prevent completing outcome measurements (e.g. severe dementia, severe vision impairment, severe functional disabilities, inability to perform basic activities of daily living) * Alcohol or other drug abuse * Conditions that impact wear of CGM (e.g. CHF with edema, skin conditions); and * End stage renal insufficiency (eGFR\<30), or on dialysis (since impact of fluid shift on sensor lag not clearly understood).