Apple's New Differential Privacy Feature is Opt-In

When Apple introduced iOS 10, macOS Sierra, watchOS 3, and tvOS 10 at the 2016 Worldwide Developers Conference, it also announced plans to implement a new technology called Differential Privacy, which helps the company gather data and usage patterns for a large number of users without compromising individual security.

At the time, Apple said Differential Privacy would be used in iOS 10 to collect data to improve QuickType and emoji suggestions, Spotlight deep link suggestions, and Lookup Hints in Notes, and said it would be used in macOS Sierra to improve autocorrect suggestions and Lookup Hints.

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There's been a lot of confusion about differential privacy and what it means for end users, leading Recode to write a piece that clarifies many of the details of differential privacy.

First and foremost, as with all of Apple's data collection, there is an option to opt out of sharing data with the company. Differential data collection is entirely opt in and users can decide whether or not to send data to Apple.

Apple will start collecting data starting in iOS 10, and has not been doing so already, and it also will not use the cloud-stored photos of iOS users to bolster image recognition capabilities in the Photos app.

As for what data is being collected, Apple says that differential privacy will initially be limited to four specific use cases: New words that users add to their local dictionaries, emojis typed by the user (so that Apple can suggest emoji replacements), deep links used inside apps (provided they are marked for public indexing) and lookup hints within notes.

Apple will also continue to do a lot of its predictive work on the device, something it started with the proactive features in iOS 9. This work doesn't tap the cloud for analysis, nor is the data shared using differential privacy.

Apple's deep concern for user privacy has put its services like Siri behind competing services from other companies, but Differential Privacy gives the company a way to collect useful data without compromising the security of its customer base.

As Apple's VP of software engineering Craig Federighi explained at the WWDC keynote, Differential privacy uses hashing, subsampling, and noise injection to enable crowd-sourced learning without simultaneously gathering data on individual people.

Top Rated Comments

macduke Avatar
60 months ago
I'll be opting IN for this. Apple put forth a tremendous amount of effort to obfuscate this data, and I trust it will remain that way. This is a great method for improving the quality of their services without compromise. This is what makes Apple great and why I'm a customer. Apple is far from perfect, but privacy is what matters most to me. Luckily they're also pretty good at UX and industrial design.
Score: 28 Votes (Like | Disagree)
ipedro Avatar
60 months ago
Apple's focus on privacy is going to become increasingly important as Apple disrupts the health field and becomes itself a health company. Apple's hiring patterns, the importance of the Apple Watch to the company and the time dedicated to health in keynotes and on its websites shows that Tim Cook's Apple is about Health. Establishing itself as trustworthy with regards to privacy is critical to its future.
Score: 15 Votes (Like | Disagree)
fxmx42 Avatar
60 months ago
"...then go see my ?" That certainly needs a Privacy feature.
Score: 12 Votes (Like | Disagree)
Zirel Avatar
60 months ago

Differential privacy without compromising individual security.. hmm.. I know I've heard this promise before and then it was later discovered, that people could in fact derive info from all that "anonymous" data...

Apple is not Google or Microsoft.
Score: 11 Votes (Like | Disagree)
Analog Kid Avatar
60 months ago
The first thing I do with any new device or software is shut down all "share information with..." options. I run Little Snitch to open up the bare minimum number of talk back channels. I generally do my best to protect my anonymity where ever I can.

I will be opting in to Apple's new system.

It may not be perfect yet, but it's important that they're taking this step and making a concerted effort to do away with the tradeoff between convenience and privacy. If those of us concerned with privacy don't support their effort, then Apple and others will decide the effort isn't worth making and then the only options left will be complete lack of privacy or complete lack of networked intelligence.

Differential privacy is different than "user identifiable information has been removed" because it is statistically secure in the way that encryption is statistically secure. Just like most security measures, there will be occasional breaches, I'm sure, but for the same reason I bought a hybrid early-- to support development of a new technology-- I'll be turning on these services.
Score: 9 Votes (Like | Disagree)
Mcmeowmers Avatar
60 months ago
They really framed this well. MS should take notes.
Score: 7 Votes (Like | Disagree)

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