Continuous Glucose Monitoring: The Tiny Sensor Quietly Replacing the Finger Prick Nobody enjoys pricking a finger five times a day just to know a number. That frustration is why continuous glucose monitoring has gone from a niche hospital tool to something millions of ordinary people now wear on their arm. A small sensor sits under the skin, talks to a phone every few minutes, and tells the wearer where their blood suga r is heading before it becomes a problem. This sits on pharmacy shelves right now, and the technology has matured faster than most people realize. What Continuous Glucose Monitoring Actually Measures A continuous glucose monitoring system does not test blood directly. It reads glucose in fluid just beneath the skin, called interstitial fluid, and estimates blood sugar from that. There is a short lag compared with a traditional blood sugar meter , but the trade off is worthwhile: instead of one snapshot from a finger prick, the wearer gets a constant str...