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Home Technology Coronavirus app could trace your contacts without sacrificing your privacy

Coronavirus app could trace your contacts without sacrificing your privacy

Coronavirus phone

James Martin/CNET

State and local governments are evaluating an MIT location-tracing app to help fight thecoronavirus pandemic, an MIT researcher leading the app effort said Friday.

“We have lots of pilots going on and lots of discussions,” said Ramesh Raskar, an MIT assistant professor involved in creating the app, called Private Kit SafePaths. “There are many jurisdictions working with us and shaping what this solution should be like.”

The app keeps a record of where you’ve been using a smartphone’s GPS location technology. If a person tests positive for COVID-19, the disease caused by the coronavirus, a health care provider can scrub the location record of private data then upload it so others can check if they’ve crossed paths. The SafePaths team is working on encryption technology designed to make the process easier on health care workers, Raskar said.

Digital apps have the potential to transform the technology of contact tracing, which lets authorities find out where a disease came from, where it’s heading next, and other useful epidemiological information. It’s typically a manual process, but apps could automate it so it works at scale. On Friday, Google and Apple announced they’ll build COVID-19 contact tracing into their smartphone software.

Privacy concerns and practical difficulties promoting the apps could hamper their adoption and efficacy, though.

The developers of SafePaths are also working with MIT researchers and colleagues at other universities who are developing technique called PACT designed to trace COVID-19 contacts without gathering location data. Like the Apple and Google approach, PACT uses Bluetooth to find out who’s been near whom.

The PACT and SafePaths teams are collaborating to build PACT abilities into SafePaths.

PACT  by broadcasting digital IDs over Bluetooth and recording digital IDs from other phones. The digital IDs change frequently — as often as once each minute — but a person who tests positive can upload their history of IDs to a database once health care authorities give the app approval. Then others with the app can check the database to see if they’ve crossed paths with infected people.

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