If you spend winters in Scottsdale and summers somewhere else, you’ve probably been told to “watch your days.” What’s changed is how easy it is for a state to challenge your story when your life leaves a digital trail. In a residency dispute, it’s not just where you say you live—it’s what your records suggest about where you actually are. That’s why the desert audit fear is spreading: seniors worry that one data source will outweigh their intent and trigger a tax bill they didn’t budget for. To be clear, there’s no public proof that Arizona’s tax agency routinely pulls license-plate reader data for income tax residency audits, but license plate readers are widely used in Arizona cities (including Scottsdale), and the data they generate can exist and be requested in investigations.
