Affordable Smartphone Attachment Enables Easy Blood Pressure Monitoring.

Engineers at the University of California San Diego have developed a low-cost clip that uses a smartphone's camera and flash to monitor blood pressure at the user’s fingertip. The clip works with a custom smartphone app and currently costs about 80 cents to make. The researchers estimate that the cost could be as low as 10 cents apiece when manufactured at scale. The technology could help make regular blood pressure monitoring easy, affordable and accessible to people in resource-poor communities.