隐藏的蓝牙/BLE 设备

Question

When programming a BLE Device or Sensor - is it possible to make it 'hidden' from the phone's general bluetooth settings > add device? And then make it possible to be discovered/paired with only through a particular phone app.

To achieve this some suggested using a particular UUID and then the propriety app would filter for that particular UUID.

Answer 1

Design your BLE hardware with your defined UUID . And inside your mobile apps, search available devices using BLE Apis on this UUID only, using filter. This will return only devices having your UUID in BLE range, not others.

List<ScanFilter> filters = new ArrayList<>();
    ScanFilter scanFilter = new ScanFilter.Builder()
          .setServiceUuid(ParcelUuid.fromString(YOUR_OWN_UUID))
          .build();
    filters.add(scanFilter);
    // Start scanning on your UUID
    mBluetoothLeScanner.startScan(filters, settings, mScanCallback);

Ref : Example

Answer 2

The suggestion of @Kushal can work. But still, you can not hide your custom peripheral device in the phone's scan results.

You can hide your custom peripheral device's BLE name by removing the local name from the advertisement data. This way, your device will be seen as Unknown Device in the phone's scan results (or in any other central device). Then you filter the UUID of your custom peripheral device in your app and users can only see your custom peripheral device in the app.