The contact tracing technology, which the two companies have been working on for more than a month, is designed to help people alert one another if someone they were in contact with over the preceding 14 days comes down with COVID-19, the respiratory illness caused by the novel coronavirus. When the project was first announced, Apple CEO Tim Cook and Google head Sundar Pichai promised the technology would be built with privacy in mind.
In the examples Apple and Google offered for the tracking technology, the two companies showed how people will be able to opt in to the system and turn on notifications in case they're exposed to someone confirmed to have coronavirus. The companies also showed how health officials will be able to confirm a person's coronavirus diagnosis by typing a special code into the patient's phone. Once they do, the patient will be asked whether they want to anonymously warn people they'd been in contact with over the preceding two weeks.
The technology identifies people a patient may have been near by helping Apple iPhones or devices powered by Google's Android software communicate with one another by using the built-in Bluetooth radio. If someone then is diagnosed with the coronavirus, a health official or doctor could enter a code into their phone, which would then send out a new signal alerting all the phones they'd come in contact with over the preceding 14 days.
Apple and Google iOS and Android operating software to help health officials get started. Apple The companies have since said they will encourage health officials to build only one app per country, to keep people from getting confused about which apps to use. Apple and Google say that will encourage wider adoption as well., offering it for about 2 billion phones around the world. In the meantime, they're sharing code and releasing test versions of their
Apple's and Google's efforts are just the latest ways big tech companies have been working to help fight the coronavirus, which has killed nearly 250,000 people around the world, and infected more than 3.5 million people, according to data compiled by Johns Hopkins University.
Verily, the life sciences arm of Google parent company Alphabet, earlier this year launched a website that gives people in California information about virus testing. The website, developed in partnership with the White House, lets people fill in symptoms and complete an online screener. Apple also has to help inform people about the coronavirus.
In addition, both companies have added prominent links to coronavirus information in their respective news aggregation apps and homepages. And they've both begun making and distributing protective equipment for health care workers.
On Monday, the two companies also discussed how they will control who has access to the technology and how the companies will ensure people's privacy. The companies said in a call with journalists that they will not allow health officials to collect location information or run targeted ads in the app.
Apple and Google began sharing details about their project together about two weeks after it began, an unusual move for the notoriously secretive companies. The companies have alsowith the press, taking questions from the press and answering privacy concerns, questions about how the system will work and how they'll get people to use it.
The biggest changes Apple and Google made sincewas to privacy protections after security experts and journalists raised concerns about how the technology will work. Apple and Google said last month that , which scrambles any identifying information to ensure people can't be tracked. The companies also said they'll protect potentially identifiable information too, such as what model of phone they're using and the signal strength of their transmissions.
The companies have also changed the name of the system. Initially, it was referred to as "" technology. Contact tracing historically is a process where health officials attempt to find anyone who a confirmed infected patient may have come in contact with and exposed. Apple and Google's system could help to automate that, but analysts noted that the name "contact tracing" could make some users anxious about by these companies and whether their phones might be used .
Apple and Google have since renamed the system "."
The big question no one seems to have the answer to is how many people will opt in to the system when it launches later this year. Apple and Google representatives said that since nothing like this has been tried at such a large scale before, the companies also don't know what minimum number of people need to sign up for the system to work.
There are signs some people want to use these apps, though. More than 2 million people in Australia downloaded a contact tracing app, called COVIDsafe, within days of its launch a couple weeks ago. Though it's not built using Apple or Google's new exposure notification system, it uses similar technology. And in India, health officials have mandated that workers download the app released in that country.
Apple and Google that said to speed the use of their technology, health officials will be able to build apps for their countries on their own or use white-label code offered to them, the companies said. That, along with Apple and Google's promises of interoperability, may help it gain wider adoption.
Apple and Google said they plan to continue regularly publishing changes to their technology on their respective websites and in future calls with the press.
CNET's Richard Nieva contributed to this report.