Bar Codes (UPC)
If you plan to manufacture CD's (yeah, remember them!), then you should have a UPC (bar code) on your artwork to identify your product as yours as it works its way throughout the retail system and to the consumer as a sale. Here are some places you can use to get yourself one for your project. In addition, CD manufacturers like Disc Makers, Oasis CD, etc., can provide you with a bar code if you don't have one, but why not get one of your own if you can? Get on it!