https://www.youtube.com/embed/Zoq5XKYdwC8
When the van arrives to the warehouse, it can be loaded. The employees scan the NFC tag in the module, and the van shows them through light-feedback where the module should be placed. All lights are red at first, but the spot where the module should go turns yellow. Once the module is placed in the right spot, a confirmation light flashes green. After which the light turns red again, indicating it does not want to be touched anymore. The electromagnets under the rail keep the modules locked to the van.
While driving, the van drives a predetermined route, in order to optimise it's function as a hub for the other courriers.
https://www.youtube.com/embed/3LZJjMQylS0
When approaching by a messenger, RFID technology warns the van driver that the messenger is approaching. A vibration in his smartwatch indicates that there is new information. His wearable starts flashing red, indicating to the driver that he should stop as soon as possible. By pressing the wearable the driver can indicate he has received the signal. The messengers device flashes confirmation-green and turns off.
https://www.youtube.com/embed/Sz-GrRIqfmc
The empty spot on the rack where the module is supposed to go will turn orange, allowing the module to be put back. As soon as the magnets make contact the electromagnetic field makes them stick together tight. The light flashes green since users prefer to have a confirmation signal. Then it turns red to indicate the module should not be touched again.
RFID technology recognised the messenger, and stop certain electromagnetic magnets from making their modules snap to the rack, therefore allowing it to be taken off. The modules will turn green to identify themselves to the messenger.
While the messenger is swapping his or hers modules, the van driver has to wait for a bit.