As a user, I would like iBeacon UUID filtering to be performed at hardware level, for it to consume less system resources

[agonper]

As per @matey97 suggestion, native ScanFilters could be used. Like this one:

byte[] manufacturerData = new byte[] {
                0,0,
                uuid[0], uuid[1], uuid[2], uuid[3],
                uuid[4], uuid[5],
                uuid[6], uuid[7],
                uuid[8], uuid[9],
                uuid[10], uuid[11], uuid[12], uuid[13], uuid[14], uuid[15],
                0,0,
                0,0,
                0
        };

        byte[] manufacturerMask = new byte[] {
                0,0,
                1,1,1,1,
                1,1,
                1,1,
                1,1,
                1,1,1,1,1,1,
                0,0,
                0,0,
                0
        };

        scanFilters.add(new ScanFilter.Builder()
                .setManufacturerData(76, manufacturerData, manufacturerMask)
                .build());

To further investigate

[agonper]

More context:

Raw UUIDs must be processed:

public static byte[] HexToSignedInt(String uuid) {
    int hexStep = 2;
    uuid = uuid.replace("-", "");

    byte[] uuid_bytes = new byte[uuid.length() / hexStep];

    for (int i = 0; i < uuid.length(); i += hexStep) {
        String part = uuid.substring(i, i + hexStep);
        uuid_bytes[i / hexStep] = (byte) Integer.parseInt(part,16);
    }

    return uuid_bytes;
}