Decide whether you want your tattoo in black and gray, or full color. Any design or image you find can be altered, or the colors can be changed, use your imagination. Do a global search on Internet, the more specific you know the style you are looking for, the better return you will get. Be prepared searching for the particular tattoo design style you have in mind, don't get swamped by the overwhelming returns.
Barcode Tattoo Designs.
Just remember than the bigger in details your tattoo is, the more expensive your tattoo may get, depending on which tattoo parlor you go to, just keep that in mind.