Bloomberg/ Los Angeles
Apple Inc and Google unveiled a rare partnership to add technology to their smartphone platforms that will alert users if they have come into contact with a person with Covid-19. People must opt in to the system, but it has the potential to monitor about a third of the world’s population.
The technology, known as contact-tracing, is designed to curb the spread of the novel coronavirus by telling users they should quarantine or isolate themselves after contact with an infected individual.
The Silicon Valley rivals said on Friday that they are building the technology into their iOS and Android operating systems in two steps. In mid-May, the companies will add the ability for iPhones and Android phones to wirelessly exchange anonymous information via apps run by public health authorities. The companies will also release frameworks for public health apps to manage the functionality.
This means that if a user tests positive for Covid-19, and adds that data to their public health app, users who they came into close proximity with over the previous several days will be notified of their contact. This period could be 14 days, but health agencies can set the time range.
The second step takes longer. In the coming months, both companies will add the technology directly into their operating systems so this contact-tracing software works without having to download an app. Users must opt in, but this approach means many more people can be included. Apple’s iOS and Google’s Android have about 3bn users between them, over a third of the world’s population.
The pandemic has killed more than 100,000 and infected 1.63mn people. Governments have ordered millions to stay home, sending the global economy into a vicious tailspin. Pressure is building to relax these measures and get the world back to work. Contact-tracing is a key part of this because it can help authorities contain a potential resurgence of the virus as people resume regular activities.
Still, this technology is controversial because it involves sharing sensitive health information from billions of people via mobile devices that are constantly broadcasting their location. Some politicians and regulators have been warning that citizens’ privacy should be protected.
“We caution that actions taken to contain spreading of coronavirus must also preserve the right to privacy held by each and every American,” members of the House Freedom Caucus, a group of conservative Republicans in the House of Representatives, wrote in a letter to US President Donald Trump. “Google’s colossal stores of data on daily movements of Americans, coupled with the might of local, state, and federal governments is an alarming prospect.”
Apple and Google stressed on Friday that their system preserves users’ privacy. Consent is required and location data is not collected. The technology also won’t notify users who they came into contact with, or where that happened. The companies said they can’t see this data either, and noted that the whole system can be shut down when needed.
Such a close partnership between these longtime rivals is extremely rare. The technology giants have competed in smartphone operating systems, app stores, media services, and voice-recognition technology for years – while trading barbs over the privacy of each other’s platforms. However, both companies have been under pressure to use their prodigious resources to help fight the pandemic.
“All of us at Apple and Google believe there has never been a more important moment to work together to solve one of the world’s most pressing problems,” the companies said in a joint statement.
Their system uses Bluetooth, a standard way for most mobile devices to communicate with each other. Apple and Google shared a theoretical example to explain how it works.
Two people meet to chat for a few minutes, and in the background via Bluetooth their smartphones exchange anonymous identifiers to register that they have been in contact. These digital keys change every 15 minutes or so and remain on these people’s devices to preserve privacy.
Several days later, one of these individuals is diagnosed with Covid-19. The person enters the results into a health-agency app on their phone. The system then asks for this user’s consent. If granted, the person’s smartphone sends a record of the other mobile devices that have been in close proximity during the previous days. This information is temporarily stored in a remote computer server for about 14 days.
Meanwhile, the other person’s phone checks the server periodically to see if any identifier keys have been associated with a positive Covid-19 diagnosis. The phone downloads all positive keys and matches it anonymously to the key belonging to the individual from the original meeting days earlier. This sends a notification to the other person’s phone with information from health agencies about how to quarantine or self-isolate.
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