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Engineers have developed a simple 3D-printed attachment that clips over a smartphones camera and flash to measure blood pressure at the users fingertip. The clip works with a custom smartphone app and currently costs about 80 cents to make. Researchers say it could help make regular blood pressure monitoring easy, affordable and accessible to people in resource-poor communities.

UC San Diego engineers have developed a simple 3D-printed attachment that clips over a smartphone's camera and flash to measure blood pressure at the user's fingertip. The clip works with a custom smartphone app and currently costs about 80 cents to make. Researchers say it could help make regular blood pressure monitoring easy, affordable and accessible to people in resource-poor communities.

Engineers from the University of California San Diego have come up with a cheap and simple way to check blood pressure using a smartphone. They've made a