तस्करामित्राभ्यागमे शङ्खदुन्दुभिशब्दमग्राह्याः कुर्युः शैलवृक्षाधिरूढा वा शीघ्रवाहना वा ॥ कZ_०२.३४.१० ॥
taskarāmitrābhyāgame śaṅkhadundubhiśabdam agrāhyāḥ kuryuḥ śailavṛkṣādhirūḍhā vā śīghravāhanā vā
盗賊または敵が接近したときは、法螺貝と太鼓の合図で警報を発するべきである。丘の上や木の上から、あるいは俊足の騎乗使者によって(それを)行ってもよい。
A low-cost, redundant mass-notification system that works without literacy or complex infrastructure, enabling coordinated response across dispersed settlements.
It combines line-of-sight broadcasting (elevated alarms) with point-to-point transmission (couriers), improving reliability and speed.