Use secure locking compartments that only the recipient can unlock via mobile authentication or QR code.
Add GPS tracking with geofencing alerts and cameras to record surroundings when tampering is detected.
Restrict usage to verified users and ensure logging of delivery data for accountability.
Design the robot with redundant sensing (both LIDAR and ultrasonic) to ensure fallback.
Add environmental monitoring sensors to allow the robot to reroute or stop if conditions become unsafe.
Design system to monitor battery levels in real-time and automatically abort or return early if low.
Incorporate fail-safe mode to alert user and halt safely when energy reserves are critical.
Promote circular economy principles, such as reusing motors/sensors.
Use food-grade containers and internal temperature/humidity controls if food delivery is supported.