Covering The Bases

For those of you that create your own covers how good are you at creating the barcode spaces required for the publisher to place the codes on? I've gotten better at it but I confess it is tricky. I know there are even ways to create your own barcodes and I think that might be easier in the long run, doing it myself rather than just making sure the appropriate space was there. I know that having a barcode scanner makes it easier for stores to do inventory, keep track of sales and re-ordering stock as necessary but it sure doesn't make it easier on my end.