Inquiry about Face Liveness Detection orientation support

Amazon Rekognition Face Liveness is designed to work primarily in portrait mode, and landscape mode is not officially supported for this feature. The service is optimized for a specific user interaction where the person holds their device vertically and positions their face within an oval displayed on the screen.

While there isn't explicit documentation stating that landscape mode is unsupported, the design and implementation of the Face Liveness check strongly imply that portrait orientation is required. The feature relies on users moving their face into an oval on the screen and holding still while different colored lights are displayed. This interaction is tailored for portrait mode on mobile devices and webcams on desktops.

It's worth noting that there are some minimum device requirements for the Face Liveness feature to function properly. These include having a front-facing camera, a minimum screen size of 4 inches, and support for recording in color at a minimum resolution of 320x240. For desktop users, webcams should be mounted on top of the screen being used for the liveness check.

Given that you're experiencing errors when attempting to use the feature in landscape mode, it's safe to conclude that landscape orientation is not supported for Face Liveness Detection. To ensure the best performance and user experience, it's recommended to implement the Face Liveness check in portrait mode only in your application.

If you need further clarification or have specific concerns about orientation support, it would be advisable to contact AWS support directly. They can provide the most up-to-date and authoritative information on the capabilities and limitations of the Face Liveness feature.

Sources
Amazon Rekognition Face Liveness - AWS AI Service Cards
Architecture and Sequence Diagrams - Amazon Rekognition
Detecting face liveness - Amazon Rekognition