[2025] VSCA 329
General information, not legal advice.
Court of Appeal (Vic)
2025-12-18
Leish JA, Taylor JA, Osborn JA
Original judgment source is linked above.
(a) CCTV footage showing the applicant with B's car at the BP service station close in time and location prior to the carjacking;
(b) telephone call charge records relating to the applicant indicating his general location at relevant times;
(c) GPS tracking records tracking the movements of the Hilux until its recovery in Reservoir on the morning following the carjacking;
(d) evidence of the applicant's arrest near the Hilux; and
(e) evidence of the recovery of the victim's mobile phone some time subsequently within a car stolen by the applicant.
(a) denied knowing anything about the carjacking;
(b) denied being in the area of Macedon at all on the day of the carjacking;
(c) asserted he had been in Werribee on that day and slept into the afternoon;
(d) said he travelled from Werribee after dark to Bendigo in order to see his son;
(e) said he visited his son and his son's mother, arriving about 11:00 pm in Bendigo;
(f) said that, after then visiting a friend, he had exchanged some methamphetamine for the Hilux, which he drove back to Melbourne before being arrested in Reservoir.
(a) the prosecution will seek to place before the jury the raw data of the call charge records which will not be able to be understood by the jury without a witness who can explain them;
(b) witnesses for the prosecution, both in relation to the phone records and the GPS data, do not have the requisite level of expertise to give evidence to explain how the data is collected and what may influence the accuracy of the data;
(c) in turn, this will leave the defence with no witness through whom to challenge that evidence;
(d) in turn this will be evidence to which the jury may attach too much weight and will either: be misleading, confusing and a waste of time;[4] or occasion unfair prejudice to the accused such as to outweigh the probative value of the evidence.[5]
(1) That the learned trial judge erred in holding the evidentiary material in relation to call charge records was relevant and admissible, that evidentiary material being:
(a) the mobile phone data depicted in the Microsoft Excel spreadsheets; and
(b) the mobile call charge records contained in the depositions.
(2) That the learned trial judge erred in holding the evidentiary material in relation to vehicle GPS data was relevant and admissible, that evidentiary material being:
(a) the vehicle GPS data report; and
(b) the evidence of Mr Rod Markwell.
(3) That the learned trial judge erred in holding the evidence of Sgt Duncan Browne, including the animated mapping he produces, was relevant and admissible as expert opinion evidence within the meaning of section 79 of the Evidence Act 2008.
Mr Markwell is the owner of Your Fleet which has been running since approximately 2021. His company installs GPS tracking on vehicles and monitors the data from the trackers. A company called Euclidic provides the GPS trackers and the software to monitor the data.
One of the businesses Mr Markwell's company works with is Olam Orchards which has 110-115 vehicles.
On 22 January 2023 Mr Markwell received a call from police at about 10-11pm requesting location information of the stolen Hilux. He provided information from the GPS data indicating it was in Bendigo. He thereafter received numerous calls seeking updated location information. On one occasion he recalled the vehicle was moving along the McIvor Highway towards Melbourne and doing very high speeds, of about 160km per hour.
He eventually identified the location of the Hilux in Tambo Avenue and Acheron Avenue in Reservoir and provided those addresses to police over the phone.
Several days later he provided access to the GPS data software to police.
In evidence he stated that he installs the devices according to the guidance provided. He knows how the device works. He confirmed the device can track a range of driving as well as location. He could not explain how speed zones were 'known' but believed it was from Google Maps. Their main interest is speed and the geography of a vehicle. He could not answer how the GPS function works; that is, how the device gathers the location information other than to say it is part of the software function.
He was able to give evidence about the relative accuracy of the location of a vehicle, at times to a street name and number while at other times, a street only will be given. In remote areas it will rely on a GPS signal, but failure to report where the vehicle is is [sic] rare. He was not aware of anything which could impact the accuracy of location information, stating that 'Any time we've looked for the whereabouts of a car, the information the tracker provide on location has always been fully accurate.'
He agreed that terrain could affect tracking in the event the GPS could not get a signal, 'but that's rare that we have that situation.' He agreed that he could not speak for times when he is not checking the system. No error reports are run and he was unaware - and deferred to Euclidic - regarding whether the software has a function to detect such errors. The system does not create an alert for a faulty tracker. A fault will only be detected once he has logged on to see a particular vehicle.
The report in relation to the stolen Hilux involved logging into Fleet Gate and running a report on that vehicle. That showed 50-100 locations over a 24 hour period. He stated that was done by date range and said the system brings up every location where its 'pinged over a period of maybe 24 hours or more.' That is provided in Excel spreadsheet form.
At times he agreed an end address location and starting address may differ. He could not explain how that comes about, and said it was a question for Euclidic.
He was not aware of any errors or faults identified in the report generated in this case.[6]
Data was provided to the informant by Vodafone in relation to what is said to be Mr [Moorhouse's] phone, and from Telstra in relation to the phones of [B] and [Ms K].
That raw data was entered by the informant into a software program called TRIPS which converts it into excel spreadsheets.
The informant has also produced tables of the call charge records.
The call charge records data was provided by the informant to Sgt Duncan Browne. Sgt Browne made a statement on 9 September 2025. Sgt Browne gave evidence at a s 198B Criminal Procedure Act 2009 hearing on 10 September 2025.
He is a Sergeant of Police stationed at the Transit Safety Division, Divisional Response Unit (DRU), Melbourne. He has been an Intelligence Analyst attached to the DRU since December 2001. He completed the Victoria Police Primary Analysis Course and qualified as Victoria Police Intelligence Analyst in 2002 and in 2007 completed the Victoria Police Tactical Intelligence Course. Tactical Intelligence describes intelligence likely to be used by investigators to advance or greatly assist in their investigations. He has also completed a number of Victoria Police training courses relating to IT applications to maintain his qualification as an Intelligence Analyst.
As a part of his duties, he provides intelligence to investigations with regard to telecommunications data and mapping. This involves extracting raw telecommunications data into usable data for analysis and then the use of this data by the investigating teams.
He explained that raw telecommunications data is extracted and converted into Microsoft Excel spreadsheets by a Victoria Police application called TRIPS. Once in that form it can be analysed and allows immediate observations of the phone usage, for example: call frequency counts, locations by cell tower counts, cell mapping page, etc.
Despite the different format of raw data provided by various telecommunications providers (telcos) data from different telcos is converted by TRIPS into a common, usable and understandable format.
He was trained in the use of the TRIPS program in around 2016 and has been using it since to interpret telecommunications data and assist investigators.
Data from TRIPS in turn can be entered into a separate Victoria Police application called ArcGIS Pro. That application creates the mapping aspect of a phone's movement across a Telco's network. Any mapping or interpretation of the data does not involve removal or editing lines of data from the TRIPS application.
Sgt Browne completed a 1 day internal training program in relation to the ArcGIS Pro program in 2023. He has been using that application or its predecessor mapping telecommunications data for ten years. He has provided mapping to support investigations or provide a visual aid for Police Prosecutors to quickly digest what can sometimes be thousands of lines of spreadsheet data.
The ArcGIS Pro application can produce single page static views or map layout to plot telecommunications data, or animated video (video format) to enable a viewer to watch the movement of a user's phone.
He confirms he is not a telecommunications expert or qualified telecommunications engineer.
In his statement he outlines the definition of call charge records and event based monitoring data and the different way they produce data by connecting to phone towers.[7]
In order to perform his role as an intelligence analyst, and to provide information to investigating teams, Sgt Browne is required to and does have an understanding of the data which is produced. His training in both the TRIPS program and the ArcGis Pro application and his experience using both, means he has an understanding of the communication between a mobile phone and a phone tower and of the way that connection is depicted visually on a map or animation.
To that end, and as I have extracted above from Sgt. Browne's evidence, he is able to explain what can be analysed and how that is represented on the static and animated mapping. Specifically relevant here, and similar to Mr Chang, he is able to explain the way a tower is represented on a map or animation and where there is a bearing arc what that represents and what the limitations are. He states 'Interpretations of the data, bearing information and cell movement is based on both the mapping application training and experience of analysing hundreds of telco records over the years.'
Although he may not understand the underlying science or technology regarding how signals are produced and how they connect to a tower, that is not necessary for him to give evidence about what is depicted and its interpretation. He has gained specialised knowledge beyond that of lay people and other police and he has acquired that knowledge through his training and experience.[8]
The similarities with this case are apparent. In my view Sgt. Browne is an expert who has acquired specialised knowledge over the course of 23 years, accompanied by training in various software programs and interpretation of their output. Much like Mr Horne, Sgt. Browne's evidence does go further than just making voluminous data more manageable. He gives expert evidence about the nature of mobile phone communication with phone towers and how they interact. Further, his evidence about the interpretation of the maps produced is drawn on his expertise as an analyst of such information.
Whether he understands the science of how the software produces the maps, or of how a bearing arc is identified, does not detract from the expert evidence he can give.[11]
(3) Subsection (2) does not apply if the representation -
(a) was prepared or obtained for the purpose of conducting, or for or in contemplation of or in connection with, an Australian or overseas proceeding; or
(b) was made in connection with an investigation relating or leading to a criminal proceeding.
(a) Sergeant Browne does not possess the expertise to allow the defence to properly explore the limitations of the call charge data;
(b) in consequence the jury may give the data undue weight; and
(c) the evidence is unfairly confusing. The applicant submits by way of example that the call charge record tables do not make clear the precise location of named cell towers.
135 General discretion to exclude evidence
The court may refuse to admit evidence if its probative value is substantially outweighed by the danger that the evidence might -
(a) be unfairly prejudicial to a party; or
(b) be misleading or confusing; or
(c) cause or result in undue waste of time; ...
137 Exclusion of prejudicial evidence in criminal proceedings
In a criminal proceeding, the court must refuse to admit evidence adduced by the prosecutor if its probative value is outweighed by the danger of unfair prejudice to the accused.
The application of s 137 of the Evidence Act 2008 requires the making of three evaluative assessments, namely the weight of the probative value of the evidence, the extent of any danger of unfair prejudice, and then a comparison of one with the other. Because there can only be one correct answer resulting from this process (or the process involved in the application of s 135), it follows that the relevant standard to be applied by an appellate court in considering an appeal from a ruling as to whether or not evidence should be excluded under one of these provisions is the correctness standard. This means we are to determine for ourselves whether the judge was correct to decline to exclude the reference table and the base station evidence under ss 135 or 137 of the Evidence Act 2008, while making due allowance for any advantages enjoyed by the judge in seeing the evidence given by the witnesses at the hearing of the pre-trial application.[14]
If a person has specialised knowledge based on the person's training, study or experience, the opinion rule does not apply to evidence of an opinion of that person that is wholly or substantially based on that knowledge.
'Specialised knowledge' is to be distinguished from matters of 'common knowledge'. Specialised knowledge is knowledge which is outside that of persons who have not by training, study or experience acquired an understanding of the subject matter. It may be of matters that are not of a scientific or technical kind and a person without any formal qualifications may acquire specialised knowledge by experience. However, the person's training, study or experience must result in the acquisition of knowledge. The Macquarie Dictionary defines 'knowledge' as 'acquaintance with facts, truths or principles, as from study or investigation' and it is in this sense that it is used in s 79(1).[17]
(a) The basic limitations of the evidence are apparent on the face of the documents and the summary tables are capable of being checked against the call charge data.
(b) Limitations of the inferences which can be drawn from the data were acknowledged by Sergeant Browne both in his statement and in cross-examination. The trial judge set out the relevant evidence at [54]-[59] of her ruling.[18]
(c) Sergeant Browne has sufficient specialised knowledge to give his proposed evidence by reason of his extensive experience processing call charge data. The basis and effect of that evidence can be explored in cross-examination.
(d) The jury will evaluate the evidence in the context of the circumstantial evidence as a whole including e.g. the CCTV footage from the BP service station.
(e) The use of the evidence will be subject to appropriate directions from the trial judge.
(f) The call charge evidence in issue is of a type commonly presented to juries and we are not satisfied that it will be misleading, confusing or cause or result in an undue waste of time.
Proposed ground 3 - the video mapping evidence
(a) the minimal delay to the trial process that should result;
(b) the need to resolve an issue of evidence which is necessary for the proper conduct of the trial; and
(c) the serious undesirability of allowing the prosecution to adduce evidence of video mapping in the form currently proposed.
[1] Because this is an interlocutory proceeding, a pseudonym has been used in place of the name of the applicant and the reasons have been prepared in a form which omits identifying details.
[2] Contrary to s 79A of the Crimes Act 1958.
[3] Contrary to s 16 of the Crimes Act 1958. The applicant is charged in the alternative with recklessly causing serious injury contrary to s 17 of the Crimes Act 1958.
[6] DPP v [Moorhouse (a pseudonym)] (County Court of Victoria, Judge Riddell, 15 September 2025) [25]-[35] ('Ruling no 1').
[8] Ibid [106]-[108] (emphasis in original). The reference to Mr Chang is a reference to the facts in Wagner (a pseudonym) v The King [2025] VSCA 56 ('Wagner').
[10] [2024] VSCA 225 ('Godwin').
[12] The dictionary to the Evidence Act defines 'document' as follows: document means any record of information, and includes - ... (c) anything from which sounds, images or writings can be reproduced with or without the aid of anything else; or (d) a map, plan, drawing or photograph; ... Section 69 of the Evidence Act states: Exception - business records (1) This section applies to a document that - (a) either - (i) is or forms part of the records belonging to or kept by a person, body or organisation in the course of, or for the purpose of, a business; or (ii) at any time was or formed part of such a record; and (b) contains a previous representation made or recorded in the document in the course of, or for the purposes of, the business. (2) The hearsay rule does not apply to the document (so far as it contains the representation) if the representation was made - (a) by a person who had or might reasonably be supposed to have had personal knowledge of the asserted fact; or (b) on the basis of information directly or indirectly supplied by a person who had or might reasonably be supposed to have had personal knowledge of the asserted fact.
[15] Godwin [2024] VSCA 225, [46]-[50] (Priest, Taylor and Orr JJA). See also Davies v The Queen [2019] VSCA 66, [176]-[177] (Kaye, McLeish and T Forrest JJA).
[17] Ibid 131 [23] (emphasis in original).
[19] Cf Moreno (a pseudonym) v The King [2023] VSCA 98, [93] (Priest AP, Niall and Kaye JJA).
Moorhouse (a pseudonym)
The King [2025] VSCA 329
Davies v The Queen [2019] VSCA 66; Godwin (a pseudonym) v The King [2024] VSCA 225; Moreno (a pseudonym) v The King [2023] VSCA 98; Wagner v The King [2025] VSCA 56, referred to.
(2014) 253 CLR 122