Alice is available for iOS and Android. Earlier on, a “marker” was necessary, a real element for the virtual object can appear on, like QR codes. In this way, when opening the Augmented Reality App and you focused with the camera on that “marker”, the virtual object appeared on it.
Since the middle of 2017, with the launch of iOS 11, iPhones presented from 6S onwards support augmented reality without a marker, thanks to ARKit, a SLAM technology that scans the real environment to place virtual objects on any surface without the need of a marker. Android introduced soon the same technology for Android Smartphones.
For now only certain Android devices support it. For the inferior models, marker is needed.
You will find the official list of Android devices that are compatible with Alice here.
