You will get the a BleakError: “BLE is not authorized - check macOS privacy settings”. If the app is already in the list but the checkbox for Bluetooth is disabled, The Privacy settings in the macOS System Preferences. It is also possible to manually add the app to the list of Bluetooth apps in Ideally, the terminal application should be fixed by adding NSBluetoothAlwaysUsageDescription It is a problem with your terminal application. The app 's ist must contain an NSBluetoothAlwaysUsageDescription key with a string value explaining to the user how the app uses this data. default - qos Exception Type : EXC_CRASH ( SIGABRT ) Exception Codes : 0x0000000000000000, 0x0000000000000000 Exception Note : EXC_CORPSE_NOTIFY Termination Reason : Namespace TCC, Code 0 This app has crashed because it attempted to access privacy - sensitive data without a usage description.