A barrier that is releasably secured across an ingress/egress to a balcony or other elevated platform. The barrier is a fence-style assembly that has a pair of vertical posts that are releasably secured within respective boots secured to the floor. One of the boots includes a switch-activated transmitter that is inactive when the respective post is seated in the boot. If the post is pulled out of the boot, the switch-activated transmitter transmits a wireless signal to a transceiver located on the barrier which then transmits a signal to an on-site controller that transmits respective text messages to authorized personnel informing them of the barrier removal and restoration and will continue to do so until the barrier status changes. The transceiver may be housed within a housing that also contains a visual and/or audible warning at the barrier vicinity to warn those in the vicinity of the barrier removal.