A number of tech startup companies are using social media to foster face-to-face connections and combat loneliness and social isolation among seniors. One example is Papa, a Miami-based health care firm that connects aging seniors with college students through a mobile app and other digital tools. Papa has partnered with health insurers such as Aetna, Alignment Healthcare and Priority Health to offer its "grandkids on demand" service to some Medicare Advantage members. “Papa Pals,” as the 3,500 college, nursing and pre-med students who have become part of the program are called, pair up with older adults who need assistance with transportation, house chores, technology lessons, and other services. Papa Pals have to submit to a stringent background check, a personality test, a virtual interview, a motor vehicle inspection and even a test of the tonality of their voice to ensure they have the kind of personality the service is looking for with a Papa Pal. With the strict guidelines, only 15% of applicants actually make it into the program.