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Unmanned science and technology: a new boost to coastal defense islands and border defense.Unmanned science and technology: a new boost to coastal defense islands and border defense.The logistics support of coastal defense islands and border defense areas is facing problems such as long distance and difficult transportation. The services provided by unmanned technology such as unmanned shops, hotels and banks are helpful to improve the efficiency of logistics support. Through the automatic replenishment system of unmanned shops, the island garrison can obtain the needed materials in time; The fast check-in and check-out system of unmanned hotels facilitates the accommodation arrangements of people passing by; The self-service of unmanned banks ensures the safe and convenient use of funds and provides a solid logistical foundation for security work.

2. Task execution in dangerous environment1. UAV: the eye of the air in coastal defense and frontier defense.2. Security and confidentiality issues

3. Unmanned shops, hotels and banks: the service guarantee of frontier islands.1. Adaptability challenges in complex environments2. Security and confidentiality issues