Samsung Galaxy S9 Intelligent Scan

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Samsung now offers four different ways of unlocking the Galaxy S9 with biometrics -- facial recognition, iris scanning, fingerprint scanning, and a combination of iris and face called Intelligent Scan.

Unlocking the Galaxy S9 might be faster -- but that doesn't mean it's more secure.

Samsung's newest smartphones, the Galaxy S9 and S9 Plus, include a new feature the company calls Intelligent Scan. The technology combines Samsung's secure iris scanner with its less-secure facial recognition unlock technology.

When unlocking your phone, it first will scan your face. If that fails to unlock the phone, the device then will check your irises. If both fail, Intelligent Scan will try to authenticate your identity using a combination of the two. And it all happens almost instantaneously.

"Intelligent Scan adapts to your needs, combining the intelligence of iris scanning and face recognition to make it even easier for you to unlock your phone in more situations," Justin Denison, Samsung's senior vice president of product marketing, said Sunday at Samsung's Unpacked event at the Mobile World Congress show in Barcelona.

Samsung's introduction of a faster but less secure way of unlocking your phone underscores the notion that while we say we value privacy and protection, we probably covet convenience a lot more. Biometric identifiers have been touted as a secure option -- hackers can't steal your code, and you don't have to remember anything -- but just how secure one option is over another varies.

Samsung's facial recognition system uses a regular camera to create a 2D map of your face, contrasted with Apple's Face ID, which creates a complex 3D scan of your facial pattern. People were able to fool Samsung's technology on last year's Galaxy S8 by using photos, and Samsung itself warned the technology could "only be used for opening your Galaxy S8 and currently [could not] be used to authenticate access to Samsung Pay or Secure Folder."

That doesn't change with the Galaxy S9.

Fooling Intelligent Scan may be as easy as waving a photo at it (though we'll have to wait for someone to actually try it to know for sure).

 Intelligent improvements

Samsung describes Intelligent Scan as "a deep learning-based verification solution that utilizes the collective strength of the Galaxy S9's iris scanning and facial recognition technologies to allow users to unlock their device and access protected content with a simple glance." It analyzes your face's visible features and the surrounding lighting conditions and decides which method works better to unlock your phone.

For phone unlocking, it first scans your face and then moves on to the iris if authentication initially fails. If conditions aren't great for using a face scan or iris alone, Intelligent Scan then combines them to unlock your device.

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