Definition
Full Tracking refers to the capability to continuously record and visualize the complete trajectory of business objects (such as goods, vehicles, assets, orders) from the starting point to the endpoint. Full tracking is a core requirement in logistics, supply chain, asset management, and other fields. By deploying logistics trackers or vehicle-mounted terminals on goods or carriers, combined with positioning, real-time location tracking, and data feedback, it enables full traceability of location, status, and events. Unlike full visibility, which focuses on visual display, full tracking emphasizes the collection and recording of trajectory data.
Full tracking relies on a stable communication connection. In cross-border scenarios, goods or vehicles may pass through multiple countries. It is necessary to use multi-country in one card international IoT SIM cards to ensure continuous connectivity and avoid track loss caused by cross-border disconnections.
Technical Features and Architecture
The full-process tracking architecture typically includes: Terminal Layer —— Logistic trackers , vehicle-mounted terminals, asset tags, supporting GPS/Beidou, cellular positioning, real-time location ; Communication Layer ——4G/5G, NB-IoT, etc., transmit location and status data back, supporting change-triggered or periodic reporting; Platform Layer ——trajectory storage, trajectory playback , geofencing, anomaly alerts; Application Layer —— full-process visual display, reports, integration with TMS/WMS.
Technical features: support multi-location method fusion; support trajectory compression and point supplementation; support traceability and auditability ; support integration with boundary-crossing alerts , tamper alarms . In cross-border scenarios, continuous connection and data transmission across multiple countries must be ensured.
Application in IoT and cross-border scenarios
Full-process tracking is widely applied in: cross-border logistics ——full-process tracking of international express, maritime, and air cargo from shipment to customs clearance, delivery, and receipt; cross-border transportation ——tracking of vehicles and goods for cross-border trucks and buses; asset management ——cross-border tracking of high-value assets and containers; cold chain logistics ——full-process temperature control and trajectory tracking for fresh produce and pharmaceuticals. SimtoLink provides one-card multi-country connectivity for cross-border logistics and transportation, enabling real-time data transmission for full-process tracking and end-to-end linkage.
What a Continuous Record of an Object's Track Requires
Fix Source, Timestamp, and Events
Full tracking leaves a replayable sequence of positions and key events for one business object through the whole transport or use. The object can be a vehicle, a container, a parcel, or a device, and the id must stay the same from start to end. Each point should include time, coordinates, the source of the fix, and an accuracy estimate. Satellite positioning, base-station positioning, and a manual scan differ in error by an order of magnitude. They cannot be drawn as equally trusted points. Events such as door open, seal, and entering or leaving a site explain why the track stayed somewhere. They are not a substitute for position. A break in tracking must keep the gap. The gap itself is part of the record.
How to Handle a Gap When the Path Crosses a Border
The condition is that, while the object moves across a border, communication or positioning can update inside an interval the business accepts. Set the interval by the business. A road vehicle and an ocean container cannot share one standard of "continuous." A SIM change, a network change, or time inside a hold or a tunnel may leave a short stretch with no points. The first point after recovery must join the previous point by time, and the missing middle must be marked. A cached catch-up must not rewrite the time of occurrence as the upload time. When several terminals are attached to one object, name a primary source, so two coordinate sets do not alternate. Store the track partitioned by object and keep the raw points. Thinning belongs on the display layer. A thinned result must not be written back over the raw points.
Joining Sparse Points into a Continuous Path
A common mistake draws a straight line on the map between two points hours apart, through a region the object never traveled, so it looks as if the whole trip was tracked. Another mistake takes a base-station fix that jumps far away and jumps back as a real detour. Timestamps in different time zones, with no mark, play back out of order. If the object is switched to another tracker midway and the ids are not joined, the track becomes two unrelated trips. Reporting position only when it changes, and never a heartbeat of "still here," makes a stop look like a lost device. Used together with full visibility, the view should show accuracy and gaps. It cannot draw only one continuous colored line.
Set the standard of continuous per object. The allowed interval differs for a road vehicle, an ocean container, and a handheld parcel. One threshold marks a normal ocean voyage as lost. A cached catch-up keeps the time of occurrence and records the upload time separately. When the primary tracker changes, join the ids, or one trip splits into two unrelated objects. Thinning happens only on the display layer. Keep the raw points, so a later review can see whether a straight line crossed a region that was never traveled. Do not automatically connect a base-station jump into a detour. A stop with no heartbeat is confused with a lost device. Stillness should also have a low-rate "still here." The gap is visible in replay. Points with poor accuracy use a different style, so not every point looks equally trusted.
When an object is unpacked, moved to another vehicle, or consolidated midway, split the track explicitly. Do not join two transport legs into one straight line. The segment records the handover place and time. If the id changes at handover and there is no mapping, the second half becomes a new object, and the first half looks as if it ended abnormally at the handover site. Replay shows gaps by default. If the user chooses to fill the line, the raw points stay available to switch back.