Which of the following IoT technologies is currently being used to help prevent rhino poaching in African wildlife reserves?

The Internet of Things (IoT) has revolutionized wildlife conservation efforts globally. Smart devices now help researchers track endangered species, monitor habitats, and combat poaching in ways previously impossible. This poll tests your knowledge about cutting-edge IoT applications in wildlife protection and animal monitoring. See if you can identify which innovative technology is actually being deployed in the field today!

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Subcutaneous GPS microchips implanted in rhinos that trigger automated drone responses when vital signs indicate distress
Acoustic sensors that can identify poacher footsteps up to 5 miles away and use machine learning to distinguish them from animal movements
Satellite-controlled robotic decoys that mimic rhino behavior to draw poachers away from real animals
Thermal imaging collars that rhinos wear to detect human body heat within a 1-mile radius and transmit alerts to rangers