Which design innovation in insulin pens significantly improved medication adherence for diabetic patients?

The medical industry has seen remarkable innovations in product design over the decades. From intuitive interfaces to patient-centered features, design thinking has transformed healthcare delivery and outcomes. This poll tests your knowledge about a groundbreaking design approach that revolutionized a common medical device. Consider how product design impacts both healthcare providers and patients in your answer!

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Memory function that records dose amount and time since last injection
Biometric fingerprint scanner for patient identification
Automatic temperature regulation system
Voice-activated dose selection