States get tracing apps to talk to each other as virus rises

COVID-19 notification apps for North Carolina, SlowCOVIDNC and Virginia, COVIDWISE are shown on a smart phone Friday, Dec. 4, 2020 in Raleigh, N.C. Six months ago, Apple and Google introduced a new smartphone tool designed to notify people who might have been exposed to the coronavirus — without disclosing any personal information. But for the most part, Americans haven't been all that interested. (AP Photo/Gerry Broome)

North Carolina' s cell phone app contact tracing SlowCOVIDNC is shown on Friday, Dec. 4, 2020, in Charlotte, N.C. An analysis shows that few Americans are utilizing contact tracing technology launched in a host of U.S. states and territories. (AP Photo/Chris Carlson)