Which IoT innovation has been most widely deployed globally for tracking endangered wildlife migration patterns across vast natural habitats?

The natural world is increasingly benefiting from Internet of Things (IoT) technology. From tracking endangered species to monitoring ecosystem health, smart devices are revolutionizing how we protect and study our planet's biodiversity. This poll tests your knowledge about cutting-edge IoT applications specifically designed for wildlife conservation and natural habitat monitoring - an emerging field where technology meets environmental stewardship.

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Satellite-connected GPS collars with solar-powered batteries that can last up to 5 years without maintenance
Underwater acoustic transmitters that communicate with deep-sea monitoring stations to track marine migration
Microscopic RFID chips embedded under animals' skin that activate when they pass specialized scanner stations
Drone-based thermal imaging systems that autonomously follow animal herds and transmit location data hourly