1. Understand the question: The question asks about the IIT that developed the ‘Crowd Eye’ device.
2. Research the technology: The ‘Crowd Eye’ device is designed to monitor crowd size in real-time and send alerts when the number of people exceeds a specified threshold. This is especially useful in managing pilgrim crowds at shrines.
3. Identify the correct IIT: The device was developed by IIT Roorkee, which is known for its innovation in technology aimed at solving real-world problems.
4. Conclusion: The correct answer is (2) IIT Roorkee.