A small team of MIT students has worked with people at a nearby assistive living facility to create an iPad app that allows the residents to communicate their needs and emergencies with the nursing staff. InstaAid, as the app is called, is primarily the creation of MIT senior Beth Hadley and The Boston Home resident Margaret Marie. The effort began last fall when Hadley and classmates senior Laura D'Aquila and junior Tanya Talkar began collaborating with Marie on a project for a course in the "principles and practices in assistive technologies." The residents at the home have call butto...