Photo of the Day: Smart Phone Case Tests Glucose December 11, 2017 By Lexie Metzler This is a GPhone: a portable glucose sensing system integrated onto a smartphone. (Credit: David Baillot/UC San Diego Jacobs School of Engineering) No need to worry about having your glucose testing devices. Engineers from the University of California San Diego have developed a smart phone case that is able to test blood glucose on the go. Check out the article for the full details.