How can a Georgia criminal defense lawyer challenge GPS tracking evidence?
Georgia criminal defense lawyers challenge GPS tracking evidence through Fourth Amendment arguments, technical accuracy disputes, and authentication requirements. Warrantless GPS tracking generally violates constitutional privacy rights following recent Supreme Court decisions. Defense attorneys must understand both legal frameworks and technical limitations to effectively challenge this increasingly common evidence type.
Warrant requirements for GPS tracking stem from United States v. Jones and subsequent cases establishing that long-term location monitoring constitutes searches. Georgia law requires probable cause warrants for placing tracking devices on vehicles or accessing historical cell phone location data. Warrantless tracking typically leads to suppression absent exigent circumstances or consent.
Technical accuracy challenges focus on GPS limitations including signal interference, device malfunctions, and interpretation errors. GPS accuracy varies from meters to hundreds of feet depending on conditions. Urban canyons, weather, and signal obstructions affect precision. Expert testimony can demonstrate that location data provides approximations rather than exact positioning.
Authentication requirements demand prosecutors establish chain of custody and data integrity for GPS records. Defense attorneys scrutinize how data was collected, stored, and analyzed. Gaps in documentation or potential tampering provide suppression grounds. Questions about device calibration, software reliability, and data interpretation challenge evidence reliability.
Alternative explanation strategies use GPS data defensively when it supports alibis or contradicts prosecution theories. Selective prosecution use of favorable data points while ignoring contradicting information reveals bias. Defense access to complete data sets often reveals exculpatory information prosecutors overlooked. Understanding both offensive and defensive GPS evidence uses helps attorneys protect clients against this powerful but imperfect technology.…