Smartphone augmented reality is augmented reality done using a smartphone.
It is enabled for example using Apple's ARKit or Google's ARCore.
Marker based AR
QR-code fiducial marker based smartphone AR is an augmented reality tracking system that is an optical system (a camera based system) that uses fiducial markers.
It is marker-based tracking that is on a smartphone.
Examples
Applications
3DBrush is an augmented reality drawing app for smartphones.[1]