GraphWear, a San Francisco-based technology company, has developed a glucose monitoring device that uses nanotech to detect biomolecules from the skin's surface without any needles. This device continuously monitors sugar and hydration levels, making it easier for the medical community and individuals to keep track of their health without breaking the skin. GraphWear's needle-free continuous glucose monitoring system is currently being tested in clinics for diabetes management, and it has the potential to diagnose and monitor chronic diseases continuously without any blood or urine.