geofence
verb(also geo-fence)
(specialist)- geofence something
to draw a virtual line around a physical area so that a signal can be sent to a mobile electronic device such as a phone inside this line or when this line is crossed 地理围栏:在物理区域周围绘制一条虚拟线,以便可以将信号发送到移动电子设备(例如该行内的电话)或跨越该行的电话