An accessing unit comprising: - a receiver adapted communicate with a server to receive an unloading location of each of one or more items; - a location unit adapted to determine a current location of a container using a global positioning system; - a determination unit adapted to: determine an angle of arrival and/or an angle of departure based on a signal from the one or more items; and determine an inward movement or an outward movement of the one or more items based on the angle of arrival and/or the angle of departure of each of the one or more items inside the container; and - a transmitter adapted to transmit a message to a device based on the current location of the container, the unloading location and the movement of the one or more items; wherein the message comprises: an alert message transmitted to the device when the current location is different from the unloading location and the one or more items is in the outward movement; or a confirmation message transmitted to the device when the current location and the unloading location are same and the one or more items is in the outward movement; or a reminder message transmitted to the device when the current location and the unloading location are same and the one or more items are not moved outside the container. - a receiver adapted communicate with a server to receive an unloading location of each of one or more items; - a location unit adapted to determine a current location of a container using a global positioning system; - a determination unit adapted to: determine an angle of arrival and/or an angle of departure based on a signal from the one or more items; and determine an inward movement or an outward movement of the one or more items based on the angle of arrival and/or the angle of departure of each of the one or more items inside the container; and determine an angle of arrival and/or an angle of departure based on a signal from the one or more items; and determine an inward movement or an outward movement of the one or more items based on the angle of arrival and/or the angle of departure of each of the one or more items inside the container; and - a transmitter adapted to transmit a message to a device based on the current location of the container, the unloading location and the movement of the one or more items; wherein the message comprises: an alert message transmitted to the device when the current location is different from the unloading location and the one or more items is in the outward movement; or a confirmation message transmitted to the device when the current location and the unloading location are same and the one or more items is in the outward movement; or a reminder message transmitted to the device when the current location and the unloading location are same and the one or more items are not moved outside the container. an alert message transmitted to the device when the current location is different from the unloading location and the one or more items is in the outward movement; or a confirmation message transmitted to the device when the current location and the unloading location are same and the one or more items is in the outward movement; or a reminder message transmitted to the device when the current location and the unloading location are same and the one or more items are not moved outside the container.