iTag Plus is a virtual access control card customized for Lvyun Zhucheng users. Users only need to install this app and apply to the community management center to open a valid card number, and then they can use their smartphones to realize remote sensing to open doors, call elevators and develop floor permissions, etc. Function, Lvyunzhucheng can be used directly, if non-lvyunzhucheng users need to use it, please contact the developer for planning and construction of relevant software and hardware before importing and using it