Home/Expert Witness Services
Mobile Forensic Expert Witness Services
Consulting, testifying, and neutral support across the full lifecycle of a mobile-evidence dispute — from first review of an extraction through declarations, depositions, and trial testimony.
⚖︎Led by Daniel B. Garrie, Esq. — Founder, Law & Forensics · Neutral, JAMS · Faculty, Harvard · retained or court-appointed in 100+ disputes. Same-day conflict checks on most new matters, capacity permitting.
Capabilities
How we support counsel and legal teams
Each engagement is scoped to the matter and the applicable legal standards. Work may be consulting-only, testifying, or neutral.
Expert witness testimony
Testifying support that explains mobile evidence — and its limits — clearly and defensibly to courts, arbitrators, and triers of fact.
Forensic report review
Structured evaluation of an existing extraction and report for reliability, completeness, methodology, and overstatement.
Rebuttal & opposing analysis
Identifying flawed assumptions, interpretation errors, and conclusions the underlying data does not support.
Deleted message analysis
What was recovered, reconstructed, cached, synced, or inferred across SMS, iMessage, and messaging apps — and what each can prove.
iPhone & Android analysis
iOS and Android databases, artifacts, and acquisition methods interpreted in their proper legal context.
Location data analysis
GPS, Wi-Fi, cell-site, and application location evidence — distinguishing device, user, account, and app activity.
Cellebrite & GrayKey review
Extraction type, tool version, device state, and parsed-versus-unparsed data validated against the record.
Chain of custody & preservation
Whether the device was preserved, collected, handled, and documented in a defensible manner.
Declarations & affidavits
Clear, properly bounded written opinions for motions, discovery disputes, and evidentiary hearings.
Deposition & trial preparation
Preparing counsel and witnesses, and delivering deposition and trial testimony with rigor and clarity.
Engagement Types
Consulting, testifying, or neutral
The right posture depends on the matter. We help you choose deliberately and preserve flexibility where the standards allow.
- Consulting expert
- Behind-the-scenes analysis, strategy, and evaluation of the evidence, typically protected from disclosure.
- Testifying expert
- Disclosed opinions delivered by report, declaration, deposition, and trial testimony.
- Neutral / special master
- Court- or party-appointed neutral analysis, drawing on Law & Forensics' history of neutral and special-master appointments, including our New York computer forensics team.
Practice Contexts
Matters we support
- Civil litigation
- Criminal matters
- Family law & custody
- Employment disputes
- Trade secret & corporate investigations
- Internal investigations
- Regulatory matters
- Arbitration
- Discovery disputes
- Evidentiary hearings
From Our Insights
Related reading
Authentication
Authenticating Digital and Mobile Evidence in the Age of AI: Is Rule 901 Ready?
Read the analysis →Preservation
Preserving Mobile and Digital Evidence: Avoiding Spoliation and Defending the Chain of Custody
Read the analysis →Neutral Services
Special Masters and Forensic Neutrals in Digital-Evidence Disputes
Read the analysis →FAQ
Frequently asked questions
What does a mobile forensic expert witness do?
We analyze how mobile evidence was acquired and interpreted, explain what it does and does not establish, and present those opinions in reports, declarations, depositions, and at trial — as consulting, testifying, or neutral experts.
Do you serve as a consulting or a testifying expert?
Both. Many engagements begin as consulting — reviewing evidence and advising counsel — and convert to a disclosed testifying role if the matter requires it. We also serve as court-appointed neutrals and special masters.
How much does a mobile forensic expert cost?
Fees depend on the number of devices, data volume, deadlines, and whether testimony is required. We scope each matter after a conflict check and provide an estimate before work begins.
How quickly can you start?
After a brief conflict check and an engagement agreement. We accept expedited matters with near-term disclosure or hearing deadlines where capacity allows.
Get Expert Help With Mobile Evidence
Tell us what the evidence has to do
Whether you need an opinion, a rebuttal, or a second look before deposition, start with a conflict-checked case review.
Submitting a request does not create an attorney-client, expert, or consulting relationship. Do not send privileged or confidential materials until a conflict check is complete and an engagement agreement is in place.