Which patient-centered design innovation was first introduced to commercial glucose meters in the early 2000s that significantly improved the diabetes management experience?

Modern medical devices are marvels of product design that balance clinical effectiveness with patient experience. The best devices not only serve their medical purpose but also consider usability, comfort, and psychological impact on patients. This poll tests your knowledge about a significant design innovation that transformed patient experience in a common medical procedure.

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No-calibration technology eliminating the need for coding strips
Bluetooth connectivity for data sharing with healthcare providers
Color touchscreen interfaces with tutorial videos
Voice-guided instructions for visually impaired users