Your fitness tracker knows how far you walked yesterday. Your car knows how hard you braked last Tuesday. Your smart thermostat knows when you came home. Your factory floor sensors know whether a component met spec before it shipped.
None of them will forget. And increasingly, courts are asking them to testify.
In the fifth installment of the Regarding Evidence column in Today’s Managing Partner, iDS CEO & Founder Dan Regard examines how the Internet of Things — and its industrial counterpart, the IIoT — has quietly become one of the most consequential new sources of evidence in modern litigation.
The Scale of the Opportunity
The numbers alone are striking. Connected IoT devices worldwide surpassed 13 billion in 2022 and are projected to exceed 40 billion by 2034. Every one of those devices is a potential silent witness — recording movements, conditions, decisions, and events with a consistency and granularity that no human witness can match.
The legal implications are already playing out in courtrooms. In a 2017 Connecticut murder case, Fitbit data contradicted a suspect’s account of when the victim died. Vehicle telematics have refuted driver claims in accident cases, showing acceleration patterns that directly contradicted testimony. Smart ID badges have verified or challenged employee presence in wrongful termination disputes. IIoT sensor logs from a factory floor exonerated a manufacturer by demonstrating that faulty components had been subjected to out-of-spec conditions after they left the facility.
In each case, the data didn’t argue. It simply recorded.
The Challenges Legal Teams Need to Understand
Regard is careful to note that IoT evidence comes with its own set of challenges — and legal teams that understand them early will be far better positioned.
Data retention is perhaps the most pressing. Many IoT devices continuously overwrite old data to make room for new recordings. If preservation isn’t triggered early, critical evidence can be permanently lost before litigation even begins. This challenge intensifies with edge computing — where devices don’t just sense but process and decide locally — creating high-volume, short-lived data footprints that are often impossible to collect after the fact.
Authenticity is the other major battleground. Just as Regard explored in the previous article in this series, proof of origin matters here too. Courts may require cryptographic verification to establish that IoT records are genuine and unmodified — a layer of forensic work that demands early expert involvement.
A Practical Framework for Attorneys
For legal teams navigating IoT evidence, Regard offers a four-stage checklist covering identification of relevant data sources, admissibility considerations, evaluation of claims, and litigation strategy. The framework addresses everything from time synchronisation across devices to educating the court in plain language — a reminder that even the most compelling IoT evidence needs to be translated into something a judge or jury can follow.
The bottom line, as Regard frames it: the question for litigators is no longer if IoT evidence will be critical — it is whether they are ready to use it to their advantage.
At iDS, that readiness is built into how we approach every engagement. Our Digital Forensics, Structured Data & Analytics, and Testimony practices are equipped to identify, preserve, interpret, and present IoT and IIoT evidence in a way that holds up under the most demanding scrutiny.
To connect with an iDS expert, visit idsinc.com.
iDS provides consultative data solutions to corporations and law firms around the world, giving them a decisive advantage – both in and out of the courtroom. iDS’s subject matter experts and data strategists specialize in finding solutions to complex evidence challenges, ensuring data can be leveraged as an asset, not a liability. To learn more, visit idsinc.com.
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