Continuous scanning on Zebra TC70

Can I implement continuous scanning in Zebra TC70 device without any extra devices?
Now I just start scanning with this code. Is it possible to scan barcodes one by one? Now scanning stops after one qr code. Thanks!

     String softScanTrigger = "com.symbol.datawedge.api.SCAN";
     String extraData = "com.symbol.datawedge.api.EXTRA_PARAMETER";
     Intent i = new Intent();
     i.putExtra(extraData, "START_SCANNING");