Which product design innovation by the MinION DNA sequencer made it revolutionary compared to previous DNA sequencing technologies?

Product design in scientific equipment has evolved dramatically over the decades, with certain innovations revolutionizing how researchers conduct experiments. From microscopes to gene sequencers, the design of scientific tools has impacted everything from usability to research outcomes. This poll tests your knowledge of a pivotal design decision that transformed an important scientific instrument's accessibility and impact.

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Its handheld size (roughly the size of a smartphone) that allowed DNA sequencing outside traditional labs
Its touchscreen interface that eliminated the need for computer connections
Its solar-powered capability that allowed operation in remote field locations without electricity
Its ability to sequence DNA without chemical reagents, using only digital imaging technology