Apple’s new and improved Photos app will be able to learn quite a bit about you based on the way you’re peering into a camera, according to a developer who has tried out the recently unveiled update.
An app developer who claims to have access to Apple’s (AAPL) latest Photos app via the developer beta program, has released the complete list of facial expressions and objects the app is capable of scanning. According to the developer, Kay Yin, Apple’s new Photos app can recognize seven facial expressions, including greed and disgust. In addition, the app can find those who are “neutral” or screaming, as well as smiling, surprised, or suspicious.
“Expressions are distinguished after forming a ‘faceprint,'” the developer says. “These distinction are used for searching. They are also rated and indexed for generation Memories and montages.”
Apple-tracking site Macrumors earlier reported on the developer’s post.
Get Data Sheet, Fortune’s technology newsletter
Apple’s Photos app was one of the highlights at the company’s Worldwide Developers Conference (WWDC) keynote last week. The app has received a major overhaul, including an improved design. However, one of its key new features is the ability to intelligently determine what’s in an image and categorize photos based on that information. The app is also capable of creating Memories, automatically generated slideshows centered on a particular topic or experience.
Apple’s Photos is available in both its upcoming operating systems, iOS 10 and macOS Sierra. While they won’t launch until the fall, Apple opened both operating systems up to developers to test the beta versions last week. Since then, a slew of developers have been combing through the code to learn more about Apple’s future plans, look for hints at what the company might have planned for upcoming hardware, and talk about some of its better features.
In the past week, Photos has been one of the apps that has earned the respect of developers, who have touted the app’s search and its ability to intelligently find content.
While Apple has remained relatively tight-lipped on how it’s finding images and interpreting them within Photos, Kay Yin, among other developers who also found the information, were able to determine what the app looks for by examining its code, which is available to developers to use for their own apps.
For more on Apple, watch:
In addition to facial expressions, Yin says that the Photos app can find a wide array of objects within images, including pianos, phones, ATM machines, and even apple sauce.
Look for the new Photos app to launch this fall on both iOS 10 and macOS Sierra.