Category Archives: Operating Systems

Apple Adds Support For External Retina Displays In Recent OS X Beta


Apple just added external Retina display support in a recent beta of OS X Mavericks 10.9.3, According to 9to5mac. 4K monitors can now run the operating system at a pixel-doubled resolution, like on a Retina MacBook Pro. It could also be a sign that Apple is getting ready to release a long-anticipated external retina display.

Like on the MacBook, the display setting screen will allow you to “scale” the resolution. You can choose between the native 4K resolution or a Retina-like resolution with bigger windows but sharper text. It increases the pixels per inch density.

When it comes to software support, Retina-optimized apps for the MacBook Pro are already optimized for the external Retina displays. It uses the same HiDPI method.

But the most challenging part of supporting external Retina displays comes from connectivity. While Thunderbolt 2 is capable of transferring 20 Gbits per second, Apple’s website only promises

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Apple Details Touch ID And The A7’s Secure Enclave In Updated iOS Security Document


Apple has shared some information around how Touch ID and its Secure Enclave keeps information private in an updated security document newly posted to its “iPhone in Business” microsite. The new info provides an inside look at how exactly the Secure Enclave generates and communicates encrypted and temporary identification information to the rest of the system to make sure that fingerprint data is never exposed to anything beyond itself.

Each Secure Enclave is provisioned during fabrication with its own UID (Unique ID) that is not accessible to other parts of the system and is not known to Apple. When the device starts up, an ephemeral key is created, tangled with its UID, and used to encrypt the Secure Enclave’s portion of the device’s memory space.

Additionally, data that is saved to the file system by the Secure Enclave is encrypted with a key tangled with the UID and an anti-replay…

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