Definition
Last Mile refers to the final delivery segment in the logistics chain, from the distribution center or station to the end user's hands. This segment often has high costs, low efficiency, and varying user experiences, making it a key focus for logistics optimization. Through innovative methods such as smart parcel lockers, pick-up stations, unmanned delivery vehicles, and crowdsourced delivery, combined with supply chain collaboration, overseas warehouses, and bonded warehouses for pre-positioned inventory, the efficiency and experience of the last mile can be significantly improved.
Challenges and Innovations in the Last Mile
The last mile faces challenges such as high costs (high per-package delivery cost), tight timing requirements (instant retail, fresh produce), and complex endpoints (residential complexes, office buildings, rural areas). Innovative models include: smart parcel lockers/pick-up stations (self-collection, reduced repeated deliveries), unmanned delivery (robots, drones), crowdsourced/intra-city delivery, and front warehouses (overseas warehouses, bonded warehouses for nearby shipping). Combined with cold chain logistics, temperature-controlled requirements for fresh produce and pharmaceuticals can be ensured.
Applications of the Internet of Things in the Last Mile
The Internet of Things gives the last mile tracking, temperature monitoring, and dispatch. GPS and sensors locate vehicles and parcels as they move. Cold-chain temperature and humidity monitoring protects quality. Face recognition and pickup codes support a handover without contact. Data is collected on a cloud platform and passed to supply-chain collaboration and reverse logistics so the chain can be seen end to end. SimtoLink can provide device connectivity, tracking, and API integration for this leg.
Implementation Guidance
Improving the last mile means choosing a delivery model (own fleet, a third party, or crowdsourcing), placing smart lockers and pickup points, pre-positioning stock with overseas warehouses and bonded warehouses, and setting up reverse logistics for returns and exchanges. Selection should cover integration with a supply-chain collaboration platform, special handling such as cold chain, and coverage in rural and remote areas. For cross-border e-commerce, this leg also has to be coordinated with electronic customs and with clearance time.
Boundaries and Failures of Final Delivery
The technical object of the last mile is the last handover of custody, not the whole move from the origin warehouse to the customer's door. The start is generally when outbound checking finishes at a city delivery station or front warehouse, or when cross-border goods in a local warehouse are ready to dispatch. The end is the recipient's signature, a locker recording a successful drop, or a pickup point completing its collection scan. This leg keeps its own states: awaiting dispatch, out for delivery, locker-dropped, collected by a point, refused, address unclear, and awaiting a second attempt. A line-haul vehicle's position only shows that the goods reached the city. It does not replace the final handover proof.
Separate management fits once upstream picking, packing, and outbound release are closed, and what remains uncertain is access control, floor, opening hours, and whether someone is there. Goods that need continuous temperature control must leave a temperature record both at the handover point and on the vehicle. A locker without refrigeration cannot accept those parcels. In cross-border traffic, time spent waiting for customs release is not part of the last mile. Counting that queue in final-leg timing hides the delivery network's real delay. The split with multimodal transport is that the line-haul waybill closes and a local delivery order is created.
Failures usually sit in the state machine, not in vehicle speed. If locker pickup and doorstep signature are written as the same "completed," a return cannot tell whether the goods are with the recipient or still in the locker. If a failed attempt is only a remark and does not open a new task, the system still shows the parcel in transit and capacity cannot be replanned. If outbound delivery and return collection share one barcode, reverse goods are recorded as delivered again. Where a village or campus has only a place name and no navigable door number, the pickup point or gatehouse should be the stated handover point, rather than leaving the courier to "put it somewhere."
If release comes from an automated high-bay warehouse, the scan that starts the final leg must be later than the warehouse's outbound confirmation. The two chains may share people and vehicles, but they cannot share one completion flag. Otherwise the warehouse balance has already dropped while nobody on the final leg has taken the goods, and the gap is counted as loss in transit.
Measures should be split by handover method. Doorstep signature asks whether the recipient was seen inside the booked window. A locker drop asks whether the door closed and the pickup code became valid. Collection at a point asks whether that point scanned the parcel, not whether the courier left the station. Folding the three into one vague same-day completion rate mixes full lockers, unanswered calls, and bad addresses, so it is unclear whether to add lockers, change delivery hours, or clean the address file first. Keep the previous failure reason before a redelivery, or the next attempt will call the same dead number again.
Redelivery should first separate "the person is temporarily out" from "the address cannot be reached at all." The first can move to the evening or to a locker that has space. The second should go back for address cleaning, not ride the same route for several days. If a full locker is still written as an available endpoint, the parcel is refused again in front of it while the status stays out for delivery. A point collection must record the point number and the shelf slot. Recording only the courier's name means the parcel cannot be found the next day. When one recipient has several parcels the same day, signature cannot be a single combined scan. If one parcel is missing, there is no way to know which order it is.
If a compound admits only registered vehicles, a courier on foot is stopped outside. The handover point should then be the gatehouse, not still the building unit. Recording that failure as a customer refusal makes support chase the recipient, and the address rule never changes. Business recipients also depend on the mailroom cutoff. After that cutoff, a status that still says out for delivery is counted again the next day among the parcels due that day.