Most evidence systems write an audit log. Far fewer can tell you whether that log can be changed afterward — or by whom. ERIN7’s audit trail is append-only and hash-chained, so tampering isn’t merely prohibited. It’s detectable.
How ERIN7 Builds a Wall Defense Attorneys Can’t Knock Down
|
“Prove it’s untampered.” |
A defense attorney says those three words and every eye in the courtroom turns to your agency. If your answer lives in a three-ring binder, a handwritten sign-out sheet, or a collection of spreadsheets spread across different folders, you are already at a disadvantage. Paper gets lost. Handwriting gets misread. Spreadsheets do not record who made a change or when. None of that belongs in a courtroom. None of it needs to.
ERIN7 was built to answer that question — completely, instantly, and in court. Every single action taken on a piece of evidence is recorded by the system automatically, without anyone having to remember to write it down. The result is a chain of custody that is unbroken, tamper-evident, and always ready to produce.
This article explains what ERIN7 records, how to access those records when it matters most, and why the details built into the system make evidence challenges extremely difficult to sustain.
The Problem With Paper
Law enforcement has relied on paper-based evidence documentation for decades. Many agencies still do. And while paper works well enough in quiet times, it tends to fall apart under the pressure of a courtroom challenge.
Frank McCully, an investigator who oversees evidence operations at a New York sheriff’s office, described what it was like before his agency moved to a modern system. You can read his full account in our Madison County Sheriff’s Office case study. Officers would hand-fill property receipts, write out chain of custody forms by hand, and attach the paperwork to the item before it went to the evidence building. Someone there would enter it into software and put the item on a shelf. Every step was manual. Every step was a chance for error.
“The chain of custody, the continuity of that item and that paperwork, could make or break a case. There’s a lot of integrity built into the chain of custody for every single item that we receive into this building.”
(Customer Interview – Frank McCully, Madison County Sheriff’s Office)
The problems with paper are not theoretical. Handwriting gets misread. Fields get left blank. Documents get misplaced. There is no timestamp on a handwritten entry — just whatever date someone scribbled down, which may or may not be accurate. And if someone makes a change to a paper log, there is no record of what it said before the change was made.
A defense attorney does not need to prove the evidence was tampered with. They only need to create doubt. A missing entry, a crossed-out field, or a date that does not line up is enough to raise a question in a jury’s mind. ERIN7 eliminates those vulnerabilities.
What ERIN7 Records Automatically
Every time anyone in ERIN7 interacts with a piece of evidence, the system creates a permanent, timestamped record. This happens in the background, without any extra steps required from the user. There is no “log this action” button. It is always running.
For every transaction — check-in, check-out, transfer, move, disposal, or any status change — ERIN7 captures the following:
- Who performed the action, identified by their login
- What action was taken
- The exact date and time, recorded down to the second
- Where the item was moved from and where it was placed
- Any notes entered during the transaction
- Digital signatures on transactions where required
That last point matters more than it might seem. ERIN7 supports digital signatures collected through a touch screen, a Topaz Signature Pad, or a mouse-drawn signature. When an officer checks an item out for court, their signature is attached to that transaction. When it comes back in, the receiving officer’s signature is attached. The custody chain shows not just who handled the item, but who signed for it at every step.
Those records are append-only. No one can edit or delete an audit entry — not an administrator, and not ERIN Technology. See how ERIN7’s audit trail works.
Have more questions about how this works? Visit our Evidence Tracking FAQ for answers to common chain of custody questions.
How to Pull a Chain of Custody Report
When you need to show the court exactly what happened to a piece of evidence, the process in ERIN7 takes less than a minute. Navigate to the item record, locate the Chain of Custody tab, or select Chain of Custody Report from the report dropdown. The system generates a complete, chronological log of every action ever taken on that item — from the moment it was first entered to the present.
That report can be exported as a PDF or printed directly. It is formatted clearly, with every transaction listed in order, every user identified, and every timestamp visible. You do not summarize what happened to the evidence. You print the full record.
For agencies with large evidence rooms, the ability to search by case number, item number, or any other field and pull the relevant report in seconds is a significant operational advantage. In the middle of a trial, when an attorney or a judge asks for documentation, the answer is not “we’ll have to look into that.” It is a printed report, ready to go.
The Detail That Wins Cases: Custom Fields and Unique Identifiers
ERIN7 does more than track movement. It captures identifying details that make it nearly impossible for a defense attorney to argue that the wrong item was processed, or that the evidence in a photograph does not match what was actually collected.
A digital forensics unit, for example, can configure ERIN7 to capture the device type, the serial number, and the IMEI number of every phone or tablet that comes through intake. The IMEI number is unique to each device worldwide. If an attorney in court questions whether the device in an evidence photo is the same device that was processed and analyzed, the IMEI number recorded at intake — and matched in the lab report and the photograph — provides a definitive answer.
One forensics lab described exactly this scenario: seven defendants being tried at the same time, with defense attorneys challenging whether the evidence being presented was the same evidence that had been processed. Because unique identifiers had been recorded in ERIN7 at intake, cross-referenced in reports, and captured in photographs, the chain of evidence was airtight.
ERIN7 allows administrators to create as many custom fields as needed and organize them by item category. A drug evidence record can capture different fields than a firearm record, which can capture different fields than an electronic device record. Every field is configured once and then becomes a permanent part of the intake form for that category — ensuring that the right information is always collected consistently, not just when someone remembers to ask for it.
Government-Grade Security Backs Every Record
The integrity of evidence records is not just about what the software captures — it is also about where those records live and how they are protected. ERIN7 is hosted on Microsoft Azure Government Cloud, the same infrastructure used by federal, state, and local government agencies across the country. Every agency’s data is kept in its own separate database, completely isolated from other customers’ records.
All access to ERIN7 is encrypted using TLS 1.2 with 256-bit certificates. This means that data moving between your agency’s devices and the server cannot be intercepted or read by anyone outside the system. Learn more about our full compliance and security standards, including CJIS, FIPS 140-2, FedRAMP, and SOC 2 Type II certification.
These certifications matter in court. When the integrity of your records is questioned, you are not relying on a verbal assurance that the system is secure. You have the documentation to prove it.
What Happens When Items Are Disposed
Chain of custody does not end when an item leaves the evidence room for the last time. Disposal documentation is part of the legal record, and gaps in that documentation can create liability long after a case is closed.
In ERIN7, the disposal workflow captures the disposal method (destroyed, returned to owner, transferred to another agency, etc.), the officer who performed the disposal, a witness, the date, the time, and optional notes. Each of these fields is required before the system will complete the disposal process. Nothing can be skipped.
If an item is later un-disposed for any reason, ERIN7 preserves the original disposal record and documents the reason for the status change. The history is never overwritten — it accumulates, so the full lifecycle of every item is always visible.
Quick Reference: What ERIN7 Logs for Every Action
|
Action |
What ERIN7 Records |
|
Check-In |
User, date/time, storage location, received by, item status, notes, signature |
|
Check-Out |
Issued by, taken by, date/time, reason, expected return date, signature |
|
Transfer |
Delivered by, received by, new location, reason, date/time, signature |
|
Move |
Delivered by, received by, new location, reason, date/time |
|
Status Change |
What changed, who changed it, previous value, new value, when |
|
Disposal |
Method, disposed by, witness, date/time, notes, signature |
|
Undispose |
Reason for reversal, new status — original disposal record fully preserved |
|
Any Field Edit |
Field name, old value, new value, user who made the change, timestamp |
The Bottom Line
Defense attorneys challenge evidence when they sense a gap — a missing log entry, an unexplained break in custody, a record that does not match a photograph. The challenge is rarely that the evidence was actually tampered with. It is that the documentation leaves room for doubt.
ERIN7 closes those gaps before they form. Every action is logged. Every user is identified. Every transaction is timestamped. Every signature is captured. The chain of custody report is one click away, ready to be printed and handed to a judge or placed in a case file.
When the challenge comes — and it will — your agency will not need to scramble for answers. The answers will already be there, organized, complete, and impossible to question.
Want to see how ERIN7’s chain of custody reporting works for your agency?
Contact ERIN Technology at (855) 558-3746 or visit erintechnology.com
Madison County Sheriff, NY Trades Paperwork for DEMS
A big part of my job was making sure paperwork was filled out correctly. It wasn’t efficient. Everyone hated the re-work. Then this happened.
A Maze of Evidence: The Critical Role of Chain of Custody in the Idaho Student Murder Case
In high-profile, complex criminal cases, such as the University of Idaho student murder case, defense attorneys play a central role in scrutinizing and questioning the vast landscape of evidence presented by the prosecution.
The defense’s role is to create a counter-narrative, challenge the evidence’s validity, and safeguard the defendant’s rights. Their strategy is often centered around relentless demands for specific pieces of evidence, which can help them construct a robust defense or expose potential flaws in the prosecution’s case.
In the case of 28-year-old criminology student and murder suspect Bryan Kohberger, the defense attorney’s persistent requests for specific evidence underscores evidence’s pivotal role in shaping a trial’s outcome and how it tilts the scales of justice.
The demand for evidence isn’t just a legal formality but a critical component of the legal process. The defense’s demands also underscore the significance of law enforcement officials maintaining meticulous records of every item collected, ensuring none is lost, mishandled, or inaccurately documented.
Such a rigorous approach to evidence management helps guarantee the integrity of the legal process and the validity of the court’s final judgment.
From Vast Evidence to a Death Penalty Case
Detectives collected more than 20,000 pieces of evidence which drew scrutiny and intrigue from the public because it included:
- 10,000 pages of reports and other written materials
- 10,200 photographs
- 9,200 tips
- 51 terabytes of phone records, audio/visual media, and digital materials
This poses the question: Is this typical or extraordinary for a serial murder case? The number is indeed staggering. However, each piece of evidence, regardless of its perceived significance, serves a unique purpose in the broader investigation. Every item collected provides a piece of the puzzle that investigators must analyze to ascertain the truth.
In this multi-jurisdictional case, the volume of evidence collected for Bryan Kohberger’s preliminary hearing came from an exhaustive investigation conducted across different states and involving numerous law enforcement agencies.
Ultimately, this massive body of evidence, meticulously gathered and analyzed, convinced prosecutors that there was sufficient cause to seek the death penalty in this first-degree murder case.
The Power of STR DNA Profiling
The breakthrough in the Bryan Kohberger case came from utilizing a procedure known as a short tandem repeat analysis or STR analysis, a common type of DNA profiling in criminal cases and other types of forensic cases, according to the National Institute of Justice. A leather knife sheath found at the murder scene with trace evidence was matched to DNA evidence of Kohberger’s father at the Pennsylvania family residence.
This method offered the scientific reliability needed to identify Kohberger conclusively since the defense claimed that multiple other men’s DNA profiles were found at the Moscow, Idaho murder scene.
The Role of Evidence Management Software Like ERIN7 in Murder Investigations
In such a sprawling, multi-state, multi-jurisdictional investigation as the Bryan Kohberger case, having an efficient, reliable method of documenting and tracking evidence is mandatory. ERIN7 software, specifically designed for law enforcement purposes, provides a robust solution for these challenges. Its ability to meticulously record and trace the chain of custody on evidence collected at crime scenes plays an instrumental role in ensuring the integrity of an investigation.
Tracking over 20,000 pieces of evidence is an enormous task, and without a secure digital system like ERIN7’s, it can be prone to errors, misplacement, and mismanagement. A streamlined process of recording, tracking, and retrieving each piece of evidence, from the point of collection to the courtroom, not only makes the task manageable but also enhances the credibility of the evidence. See how ERIN7 builds a chain of custody defense attorneys can’t knock down.
Even when there may be a lack of DNA evidence, there are typically many other kinds of evidence to be coded and tracked, such as surveillance footage, video footage, body cam footage, and security footage.
With so much manpower being devoted to finding, prosecuting, and bringing a murderer to justice, digital evidence management software (DEMS) is the only way to build a solid case and speed up the legal process. In time-sensitive investigations, efficiency makes the difference between justice served or denied.
The Bryan Kohberger defense team’s case offers an in-depth exploration of the paramount importance of comprehensive, accurate evidence documentation. It’s not just about the volume of evidence collected; it’s about the precision in its management and its role in determining the path of justice.
As technology integrates deeper into our lives, solutions like ERIN7 software are essential in establishing robust, efficient criminal justice systems. The ability to adapt and integrate such technological advancements is what will shape the future of law enforcement and criminal investigations.
For more information about ERIN7, contact us to schedule a live demo.
Robbie Giles, CC BY-SA 2.5, via Wikimedia Commons











