Detecting the Invisible: Searcher-Facing BLE Broadcast and Owner-Facing Remote Alert as a Unified Cache Detection System
A Proposed Low-Power Bilateral Detection Architecture in the Beyond the Map's Edge Treasure Hunt: Searcher-Facing BLE Broadcast and Owner-Facing Remote Alert as a Unified Cache Detection System Low Rents, May 2026 ABSTRACT This paper proposes and provides substantiated technical and biographical evidence for the hypothesis that Justin M. Posey, creator of the Beyond the Map's Edge (BTME) wilderness treasure hunt, deployed a low-power, trigger-activated electronic detection system at or near the location of his hidden cache. The proposed system is hypothesized to perform two simultaneous functions upon detecting the approach of a person within a defined perimeter: (1) initiating a Bluetooth Low Energy (BLE) advertisement broadcast detectable by any consumer-grade mobile device or BLE scanner, thereby providing the discovering searcher with an unambiguous electronic signal confirming their proximity to the cache (the function Pos...
