Barcode scanner.
before I say anything I must say that I dont oppose to the barcode scanner device which is used in the super markets I just say that now days we got the barcode and qr code scanner in every mobile so why should we invest in getting such bigger devices when we go to buy a jio sim they do every work on android phones they take all details using their android mobiles but at the time of billing they take the barcode scanner to make bills they even can have the barcode scanner in their mobiles which is free of cost in the playstore of android and app store of iphones we just need a internet connection then why should we invest on the separate barcode scanners so I find it money wasting product.