diff --git a/routes/bluetooth_v2.py b/routes/bluetooth_v2.py
index 6bd105a..e75ec7f 100644
--- a/routes/bluetooth_v2.py
+++ b/routes/bluetooth_v2.py
@@ -928,15 +928,21 @@ def get_tscm_bluetooth_snapshot(duration: int = 8) -> list[dict]:
         List of device dictionaries in TSCM format.
     """
     import time
+    import logging
+    logger = logging.getLogger('intercept.bluetooth_v2')
 
     scanner = get_bluetooth_scanner()
 
     # Start scan if not running
     if not scanner.is_scanning:
+        logger.info(f"TSCM snapshot: Scanner not running, starting scan for {duration}s")
         scanner.start_scan(mode='auto', duration_s=duration)
         time.sleep(duration + 1)
+    else:
+        logger.info("TSCM snapshot: Scanner already running, getting current devices")
 
     devices = scanner.get_devices()
+    logger.info(f"TSCM snapshot: get_devices() returned {len(devices)} devices")
 
     # Convert to TSCM format with tracker detection data
     tscm_devices = []
diff --git a/routes/tscm.py b/routes/tscm.py
index 6b0f58f..75d5296 100644
--- a/routes/tscm.py
+++ b/routes/tscm.py
@@ -1243,9 +1243,13 @@ def _run_sweep(
                 try:
                     # Use unified Bluetooth scanner if available
                     if _USE_UNIFIED_BT_SCANNER:
+                        logger.info("TSCM: Using unified BT scanner for snapshot")
                         bt_devices = get_tscm_bluetooth_snapshot(duration=8)
+                        logger.info(f"TSCM: Unified scanner returned {len(bt_devices)} devices")
                     else:
+                        logger.info(f"TSCM: Using legacy BT scanner on {bt_interface}")
                         bt_devices = _scan_bluetooth_devices(bt_interface, duration=8)
+                        logger.info(f"TSCM: Legacy scanner returned {len(bt_devices)} devices")
                     for device in bt_devices:
                         mac = device.get('mac', '')
                         if mac and mac not in all_bt: