The aim of this feasibility study is to compare efficacy, device satisfaction and quality of life (QOL) in people with type 1 or 2 diabetes delivering mealtime insulin using a novel insulin bolus-patch (Finesse™; Calibra Medical, Inc., Redwood City, CA) versus current devices that deliver bolus insulin (pen/syringe). All subjects injected their basal insulin using their current pen/syringe.