I expect that someday we will be buying watermelons that have been bred to include the store bar code on the skin. For now, we have some interesting varieties of orange raspberries, white rhubarb, and black rice. Beets are on the cutting edge, with red, white, gold, and candy-striped. Our local farmer’s market didn’t have the candy-striped kind, no doubt a step towards the built-in bar code, so I made do with some golden beets.