Knowing where an asset is can be useful. Knowing where it has been, when it moved, what happened during the journey and what conditions it experienced can be much more valuable.
Our devices are just one part of a digital chain of custody. They contribute reported locations, timestamps and available device events. A complete custody process also needs records of who held the asset, documented transfers, physical checks and clear responsibilities.
A traditional GPS tracker is usually designed to answer a simple question: where is this asset now? ATLAS adds context by bringing together location history, timestamps, sensor readings and operational events into a single, auditable record.
For organisations responsible for important, sensitive or high-value assets, that wider history can make it much easier to understand what happened during an asset’s journey without relying only on phone calls, messages or individual recollection.
What does “digital chain of custody” mean?
Digital chain of custody documents who possessed or controlled an asset over time, including transfers. ATLAS supports this process with reported device locations and timestamps. It does not prove who held the device or associated asset, or verify a handover.
Supporting device history can include information such as:
- GPS location and historical routes
- timestamps
- movement events
- box or enclosure-open events
- temperature
- humidity
- free-fall or impact events
- immutable system logs
The exact data captured depends on the device and deployment, but the principle is the same: instead of looking at individual pieces of information in isolation, the platform connects them into an operational history.
This creates a single place where authorised users can review what the system recorded over time.
GPS tracking and digital chain of custody are not the same thing
GPS tracking can support digital chain of custody, but location reports alone do not establish possession.
Imagine that you are responsible for a sensitive asset travelling between two locations. A GPS tracker may tell you that the asset is currently at its destination.
That is useful, but it leaves a number of questions unanswered:
- What route did it take?
- What time did it leave?
- When did it arrive?
- Was it moved after arrival?
- Was its enclosure opened during the journey?
- Did it experience a sudden drop or impact?
- Was it exposed to unusual temperature or humidity?
If those questions matter to your operation, a latest-position marker on a map is not enough.
Device location and event history can preserve useful context around the journey, while separate custody records document possession and transfers.
Why an auditable history matters
Many organisations still manage asset movements through a mixture of phone calls, spreadsheets, messaging apps and verbal updates. That can work perfectly well when everything goes to plan.
The difficulty appears when someone later needs to understand exactly what happened.
One person may remember an asset arriving at 14:30. Another may have a WhatsApp message sent at 14:42. A spreadsheet may have been updated later in the afternoon. The driver may remember taking a different route.
None of those sources is necessarily wrong, but they do not create a single operational record.
ATLAS brings the information recorded by the tracking system into one place, creating an auditable timeline that can be reviewed later.
What information can form part of a digital chain of custody?
Location is usually the starting point, but it becomes much more useful when combined with other data.
Location and historical routes
Live location helps an operations team understand where an asset is now. Historical routes make it possible to look back at the journey afterwards and review where the asset travelled over a particular period.
This can be especially useful when the expected route and the actual route are different, or when an operational team needs to understand a delay.
Timestamps
Events become significantly more useful when they are tied to time. A record that an asset moved is helpful. A record showing that it moved at 11:43, arrived at another location at 12:18 and was opened at 12:26 provides much more operational context.
Movement events
A tracking device can record when an asset begins moving or when movement occurs after it was expected to remain stationary. For some organisations, that may be more important than constantly watching a map.
Box-open events
Where the hardware supports it, an enclosure-open event can record that a box, case or container was opened. This does not explain why it was opened or who opened it, but it adds another useful event to the asset’s recorded history.
Temperature and humidity
Some assets are sensitive to their environment. Temperature and humidity monitoring can help organisations understand the conditions an asset experienced during storage or transport rather than relying only on conditions measured at the start or end of a journey.
Free-fall and impact events
A free-fall event can indicate that an asset or its tracking device experienced a sudden drop. Again, the event itself does not tell the entire story, but it can provide useful context when reviewing the journey of fragile or important equipment.
Why immutable logs are important
An audit trail is only useful if the history of the system can be trusted as a record of what the platform captured.
ATLAS uses immutable logs so that recorded events form a persistent operational history.
For authorised users, that means there is a consistent timeline available for later review rather than a collection of separate updates that may have been edited, misplaced or remembered differently.
This is one of the key differences between simply receiving tracking updates and supporting digital chain of custody with device history.
What happens when mobile coverage is poor?
Any connected tracking system has to deal with the realities of mobile coverage.
A tracker may move through rural areas, large buildings, basements or other places where one mobile network has limited or no signal.
ATLAS devices use multi-network SIM cards so they can connect across multiple available mobile networks rather than depending on a single network provider.
That does not mean mobile dead zones disappear entirely. No cellular tracking system can guarantee continuous coverage everywhere.
Instead, multi-network connectivity can improve the opportunity for the device to remain connected as it moves between areas with different network coverage. Where a device is configured to retain data during a temporary loss of connectivity, recorded information can be transmitted when a connection becomes available again.
The result is a more resilient approach than relying on one network alone.
How device records fit into the wider custody process
ATLAS supports an organisation’s digital chain of custody by adding device location and event history. The organisation maintains the records and procedures that establish possession, authorise transfers and confirm receipt.
- Identify the asset and tracker: record which device is attached to which asset, and check that association during deployment and receipt.
- Record possession and transfers: document who releases and receives the asset, when the transfer takes place and any required authorisation or sign-off.
- Carry out physical checks: follow the organisation’s procedures for seals, contents, condition and secure storage.
- Review the supporting device history: use ATLAS reported locations, timestamps and available events alongside those records to investigate delays, route exceptions or discrepancies.
For example, an ATLAS location report may show that a tracker was at a receiving site at 12:18. The receiving team’s handover record establishes who accepted the asset and records the checks they performed. Together, these records provide more context than either does alone; the location report itself does not verify the transfer.
Possession records and handover sign-offs are maintained through the organisation’s own processes. ATLAS devices supply supporting operational information, and do not establish a complete digital chain of custody on their own.
Where can digital chain of custody be useful?
Digital chain of custody can be useful anywhere the history of an asset matters as much as its current location.
Examples may include:
- high-value equipment moving between sites
- sensitive public-sector assets
- temperature-sensitive goods
- remote or temporary equipment
- secure deliveries
- reusable transport cases or containers
- election equipment and ballot-box movements
- assets where unexpected movement or opening needs to be reviewed
It is not necessary for every tracking use case. If all you need to know is roughly where a low-risk asset is, a conventional GPS tracker may be enough.
Digital chain of custody becomes more relevant when someone may later need to ask: “What happened to this asset during its journey?”
A real-world example: ballot-box tracking
During the 2024 UK Parliamentary election, ATLAS was used to support the tracking of ballot boxes for Plymouth City Council.
Election logistics are a good example of why an operational history can matter. Teams are coordinating time-sensitive movements across multiple locations, with many people involved and very little room for confusion.
In that environment, a tracking platform can give authorised users visibility of asset movements and provide a historical record that can be reviewed afterwards.
Elections are only one example. The same underlying principle applies in commercial, industrial and public-sector operations: when an asset matters, the ability to review its journey can be valuable.
From “where is it?” to “what happened?”
Live tracking and retained device history answer different operational questions. Both can support custody procedures; neither establishes who possessed an asset.
Shows the latest reported position of an asset.
Shows where it has been, when it moved, which events were recorded and what conditions it experienced.
That difference changes tracking from a live-location tool into an operational record. For many organisations, that historical context is where much of the value lies.
How ATLAS supports digital chain of custody
ATLAS helps authorised teams see the latest reported device location and review timestamped movement history. Depending on the hardware and deployment, sensor readings and device events can add context to that history.
Teams can use this information to compare reported movements with planned routes, review when a tracker reported at a site and investigate exceptions alongside their own custody records.
The platform’s retained history and reporting help teams review what the tracking system captured. They do not establish who possessed an asset, verify a handover or confirm a container’s contents.
Our devices are one part of the wider digital chain of custody: they support the record of where and when, while the organisation’s people, procedures and handover records establish who held the asset and how it was transferred.