अमित्राटवीसंचारं च राज्ञो गृहकपोतैर्मुद्रायुक्तैर्हारयेत्धूमाग्निपरम्परया वा ॥ कZ_०२.३४.११ ॥
amitrāṭavīsaṃcāraṃ ca rājño gṛhakapotair mudrāyuktair hārayet dhūmāgniparamparayā vā
他应将敌军在森林中的动向禀报国王,可用携带封印信物的家鸽传递,或以烟火相继的信号链传报。
To authenticate origin and prevent tampering or spoofing—an early form of message integrity and sender verification.
Faster broadcasting across fixed points and less dependent on animal handling; pigeons are better for discrete point-to-point transmission.