When Apple unveiled the iPhone 5S yesterday, the standout feature was undoubtedly its Touch ID fingerprint sensor that unlocked the smartphone through biometrics.
That immediately led to privacy-concerned individuals to start pointing fingers in the company's direction, and not in order to test out the smartphone's innovative fingerprint scanner.
Apple, anticipating conspiracy theories, reiterated today that the iPhone 5S won't actually store users' fingerprint images on the device, according to the Wall Street Journal.
Instead, Touch ID keeps fingerprint data encrypted within its A7 processor. It's locked away on the device itself, not on Apple's servers or iCloud.
Touch ID data encryption
Fingerprint data, according to yesterday's presentation, includes a fingerprint's arch, loop or whorl classification and individual ridge details smaller that the human eye can see.
The Touch ID system goes as far as capturing minor variations in ridge direction caused by pores and edge structures.
Because there isn't a stored fingerprint image on the device, it's unlikely someone could reverse engineer your fingerprint even if they cracked the the A7 system-on-a-chip, according to the Wall Street Journal.
Apple also noted that third-party applications are not able to make use of the fingerprint scanner right now.
Fingerprint sensor flaws
The other fear is that the iPhone 5S fingerprint sensor won't work consistently or at all for people with impairments.
Apple admitted to the paper that testers with sweat and moisture-laden digits were incompatible with the Touch ID system in some cases.
Likewise, the fingerprint sensor may be unable to pick up on fingers scarred by accidents or surgery.
The solution here is to use the still-available four-digit passcode - the other kind of digits. It's not going anywhere, according to Apple.
In fact, setting up a backup passcode is required when enabling Touch ID and only this code works after a reboot or 48 hours of inactivity, preventing hackers from buying time to find a way to circumvent the fingerprint scanner.
Even if Apple hasn't put to rest these two chief fingerprint sensor concerns for you, it's always possible to opt for the plastic iPhone 5C. It has just as much Touch ID technology as aluminum. Meaning none at all.
- Check out the iPhone 5S vs iPhone 5C comparison
Source : http://www.techradar.com/news/phone-and-communications/mobile-phones/apple-puts-finger-on-iphone-5s-touch-id-privacy-concerns-flaws-1180401
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