The ros_astra_camera package is an OpenNI2 ROS wrapper created for Orbbec 3D cameras. This package allows the usage of Orbbec 3D cameras with ROS Kinetic, Melodic, and Noetic distributions ...
I will quote a lot of times from this official document, see the full document here: https://developer.android.com/develop/connectivity/nfc/hce This app explains how ...