WATCH LIVE: AZ v. Mark Gooch Trial Day 5 - Direct Exam of Det. Tristan Meyer, Coconino Co Shrffs Ofc

TL;DR

• Analyzing cell phone records, tower dumps, and Nilos data to track device locations in a criminal investigation.

Transcript

it's only time so sleep um similar ah uh record reflect the presence of counsel the defendant and the jury mr barker you may call your next witness state calls do you solemnly swear under penalty of perjury the testimony you're about to give will be the truth the whole truth and nothing but the truth to help you god thank you good morning good morn... Read More

Key Insights

• 🦻 Tower dumps and cell phone records aid in tracking device locations and connections in criminal investigations.
• ⚾ Nilos data, based on GPS usage, provides estimated handoff coverage areas for cell device locations.
• 📡 Accuracy of Nilos data is influenced by the device's active GPS usage, signal quality, and network coverage.

Questions & Answers

Q: What certified documents did the case agent receive and analyze in the investigation?

The case agent received and analyzed certified tower records, AT&T phone records for multiple devices, financial records from American Express, and Google email records related to the case.

Q: How does the case agent map and visualize cell device locations based on the data received?

The case agent creates KML files using Google Earth to map cell site locations, estimated handoff coverage areas, and Nilos data based on GPS usage for accurate location representation.

Q: What factors affect the accuracy of Nilos data in tracking device locations?

The accuracy of Nilos data is influenced by the device's GPS usage, signal quality, and network coverage, with active GPS usage providing more precise location data.

Q: How does the case agent differentiate between tower dumps, cell site records, and Nilos data in the investigation?

Tower dumps provide call detail records from specific areas, cell site records show device connections to towers, and Nilos data tracks device locations based on GPS usage for more accurate mapping.

Summary & Key Takeaways

• Case agent analyzes cell phone records and tower dumps in the investigation of a murder case involving the abduction and murder of Sasha Krauss.

• Certifying tower records reveal locations of AT&T cell sites in Farmington, Four Corners, and North of Flagstaff in the US.

• Nilos data, based on GPS usage, provides estimated handoff coverage areas of cell devices for accurate location mapping.