Someday, the thread holding your skin and tissues together after a surgical suture could beam info about your wound straight to your doctor. A team of Tufts University engineers have created smart threads made out of various materials, from cotton to synthetics, by dipping them into physical and chemical sensing compounds. They can sense pressure, stress, strain, temperature, pH and glucose levels, among other diagnostic data. The smart suture on your body can send those info wirelessly to medical professionals' phones or computers, so they can monitor how you're healing and see if the wound is infected.