Maintaining vaccine integrity has become a major priority across Delhi NCR, where thousands of doses move daily between hospitals, diagnostic centers, immunisation clinics, and distribution warehouses. Even a small temperature shift during transport or storage can reduce vaccine potency — leading to spoilage, financial loss, and compromised public health. To reduce these risks, healthcare providers and pharma distributors are adopting modern Active Track & Trace Solutions powered by IoT devices, smart sensors, and cloud-based monitoring. These systems work seamlessly with tools such as temperature & humidity data logger Delhi and cloud data logger Delhi to ensure real-time visibility throughout the