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
iOS 26 was released last month, but the software train never stops, and iOS 26.1 beta testing is already underway. So far, iOS 26.1 makes both Apple Intelligence and Live Translation on compatible AirPods available in additional languages, and it includes some other minor changes across the Apple Music, Calendar, Photos, Clock, and Safari apps.
More features and changes will follow in future ...
With the fourth betas of iOS 26.1, iPadOS 26.1, and macOS 26.1, Apple has introduced a new setting that's designed to allow users to customize the look of Liquid Glass.
The toggle lets users select from a clear look for Liquid Glass, or a tinted look. Clear is the current Liquid Glass design, which is more transparent and shows the background underneath buttons, bars, and menus, while tinted ...
Apple plans to cut production of the iPhone Air amid underwhelming sales performance, Japan's Mizuho Securities believes (via The Elec).
The Japanese investment banking and securities firm claims that the iPhone 17 Pro and iPhone 17 Pro Max are seeing higher sales than their predecessors during the same period last year, while the standard iPhone 17 is a major success, performing...
Apple's software engineers continue to internally test iOS 26.0.2, according to MacRumors logs, which have been a reliable indicator of upcoming iOS versions.
iOS 26.0.2 will be a minor update that addresses bugs and/or security vulnerabilities, but we do not know any specific details yet.
The update will likely be released by the end of next week.
Last month, Apple released iOS 26.0.1,...
While the new iPad Pro's headline feature is the M5 chip, the device has some other changes, including N1 and C1X chips, faster storage speeds, and more.
With the M5 chip, the new iPad Pro has up to a 20% faster CPU and up to a 40% faster GPU compared to the previous model with the M4 chip, according to Geekbench 6 results. Keep in mind that 256GB and 512GB configurations have a 9-core CPU,...
iOS 26.4 is expected to introduce a revamped version of Siri powered by Apple Intelligence, but not everyone is satisfied with how well it works.
In his Power On newsletter today, Bloomberg's Mark Gurman said some of Apple's software engineers have "concerns" about the overhauled Siri's performance. However, he did not provide any specific details about the shortcomings.
iOS 26.4 will...
Apple on Wednesday updated the 14-inch MacBook Pro, iPad Pro, and Vision Pro with its next-generation M5 chip, but previous rumors have indicated that the company still plans to announce at least a few additional products before the end of the year.
The following Apple products have at one point been rumored to be updated in 2025, although it is unclear if the timeframe for any of them has...
With the fourth beta of iOS 26.1, Apple added a toggle that makes Liquid Glass more opaque and reduces transparency. We tested the beta to see where the toggle works and what it looks like.
Subscribe to the MacRumors YouTube channel for more videos.
If you have the latest iOS 26.1 beta, you can go to Settings > Display and Brightness to get to the new option. Tap on Liquid Glass, then...
Apple plans to launch MacBook Air models equipped with the new M5 chip in spring 2026, according to Bloomberg's Mark Gurman. Apple is also working on M5 Pro and M5 Max MacBook Pro models that will come early in the year.
Neither the MacBook Pro models nor the MacBook Air models are expected to get design changes, with Apple focusing on simple chip upgrades. In the case of the MacBook Pro, a m...
