An industrial-design student in Korea has introduced a concept for the Smart Knife, a digital, rechargeable knife with a “sensor-equipped blade” that doubles as a touch screen. The blade contains negative ions that will allegedly prevent foods from oxidizing, and it can also display information about the freshness, potential bacteria contamination, and nutritional content of whatever it’s chopping. There’s also a Siri-esque voice recognition option, which surely won’t fail to inform you that you’ve just sliced your finger open because you were distracted by the cool glowing screen. [Electrolux Design Lab via Fine Dining Lovers]