The five most common types of hidden voice recorders JRS INVESTIGATIONS finds during a TSCM DEBUGGING SWEEP in Delray Beach, FL are : 1. Ultra-Thin Micro-Recorders: These feature extremely flat profiles, often measuring less than a quarter-inch thick. 2. Magnetic Mini-Recorders: Built with integrated heavy-duty magnets, these devices quickly snap onto any iron or steel surface. 3. USB Flash Drive … Continue reading 5 Hidden Voice Recorders Found Delray Beach JRS Investigations