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In the video, I discussed how hyper-local companies like Uber, Ola, Swiggy, and Gojek ensure privacy by using virtual phone numbers instead of sharing actual numbers with delivery agents. I also introduced my system design course, focusing on real-world systems and trade-offs, with insights from engineers at top tech companies. Virtual phone numbers are crucial for privacy as they are temporary and transactional, assigned on-demand to users and delivery agents. The architecture involves vendors providing virtual numbers, VN service managing assignments, and Telecom operators bridging calls without revealing actual numbers. Validation is key to ensuring privacy during transactions.
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