Apple and Google Strengthen Privacy of COVID-19 Exposure Notification System, Targeting Next Week for Beta Release
As a result of feedback from officials around the world, Apple and Google today have disclosed a series of changes to their upcoming COVID-19 contact tracing initiative, with a focus on even stronger privacy protections and accuracy.
- Apple and Google are now referring to "contact tracing" as "exposure notification," which the companies believe better describes the functionality of their upcoming API. The system is intended to notify a person of potential exposure, augmenting broader contact tracing efforts that public health authorities are undertaking.
- Keys will now be randomly generated rather than derived from a temporary tracing key, making it more difficult for someone to guess how the keys are derived and use that information to try and track people.
- Bluetooth metadata will be encrypted, making it more difficult for someone to try and use that information to identify a person.
- Exposure time will be recorded in five minute intervals, with the maximum reported exposure time capped at 30 minutes.
- The API will include information about the power level of the Bluetooth signal in the data that is exchanged between phones. This can be used in conjunction with the RSSI ("Received Signal Strength Indication") to more accurately estimate the distance between two phones when contact was made.
- Apple and Google will allow developers to specify signal strength and duration thresholds for exposure events.
- The API will now allow for determining the number of days since the last exposure event to better determine what actions the user should take next.
- The API's encryption algorithm is switching from HMAC to AES. Many devices have built-in hardware for accelerating AES encryption, so this change should help performance and efficiency on phones.
Further changes to the API specifications will be made over time based on continued feedback from public health authorities.
Apple and Google are targeting next week for the release of the seed version of iOS and Android operating system updates, which will support these APIs to enable testing by public health authority developers. The software update will support iOS devices released in the last four years, dating back to the iPhone 6s and iPhone 6s Plus.
Apple and Google revealed plans for this exposure notification initiative two weeks ago. The joint effort will use Bluetooth to alert users when they have potentially come in close contact with someone who later tests positive for COVID-19, on an opt-in basis. The companies have shared an updated FAQ for users with more details about the system.
Popular Stories
Apple will launch its new iPhone 17 series in two months, and the iPhone 17 Pro models are expected to get a new design for the rear casing and the camera area. But more significant changes to the lineup are not expected until next year, when the iPhone 18 models arrive.
If you're thinking of trading in your iPhone for this year's latest, consider the following features rumored to be coming...
A new Apple TV is expected to be released later this year, and a handful of new features and changes have been rumored for the device.
Below, we recap what to expect from the next Apple TV, according to rumors.
Rumors
Faster Wi-Fi Support
The next Apple TV will be equipped with Apple's own combined Wi-Fi and Bluetooth chip, according to Bloomberg's Mark Gurman. He said the chip supports ...
Apple does not plan to refresh any Macs with updated M5 chips in 2025, according to Bloomberg's Mark Gurman. Updated MacBook Air and MacBook Pro models are now planned for the first half of 2026.
Gurman previously said that Apple would debut the M5 MacBook Pro models in late 2025, but his newest report suggests that Apple is "considering" pushing them back to 2026. Apple is now said to be...
Apple's next-generation iPhone 17 Pro and iPhone 17 Pro Max are only two months away, and there are plenty of rumors about the devices.
Below, we recap key changes rumored for the iPhone 17 Pro models.
Latest Rumors
These rumors surfaced in June and July:A redesigned Dynamic Island: It has been rumored that all iPhone 17 models will have a redesigned Dynamic Island interface — it might ...
iPhone 17 Pro and iPhone 17 Pro Max models with displays made by BOE will be sold exclusively in China, according to a new report.
Last week, it emerged that Chinese display manufacturer BOE was aggressively ramping up its OLED production capacity for future iPhone models as part of a plan to recapture a major role in Apple's supply chain.
Now, tech news aggregator Jukan Choi reports...
In select U.S. states, residents can add their driver's license or state ID to the Wallet app on the iPhone and Apple Watch, providing a convenient and contactless way to display proof of identity or age at select airports and businesses, and in select apps.
Unfortunately, this feature continues to roll out very slowly since it was announced in 2021, with only nine U.S. states, Puerto Rico,...
The iPhone 17 and iPhone 17 Air will be available in a total of nine color options, according to new information coming out of Asia.
The iPhone 17 Air's expected color options.
According to the leaker going by the account name "yeux1122" on the Korean blog Naver, accessory manufacturers are now producing camera protector rings for the iPhone 17 and iPhone 17 Air in colors to match their...
Apple will launch a new 12th generation entry-level iPad in the spring of next year, according to Bloomberg's Mark Gurman.
Apple is said to have two versions of the entry-level 11-inch iPad in development, codenamed J581 and J582. These could refer to different storage capacities – in which case, Apple may be planning to drop the existing lowest capacity option. The current iPad 11 is...
