This 'system' only has one node and thus can only cover one room and so would only be practical for retail, not homes. As the great statistician patrick has tho

This 'system' only has one node and thus can only cover one room and so would only be practical for retail, not homes. As the great statistician patrick has thought us, businesses will pay if you can demonstrate a ROI. This system only has to prevent half a robbery to pay for itself. The ironic part is the businesses already have real security systems which do everything the laser system could do. The real security system will already phone the police and ring an alarm.