1 This helps to kill any bugs on the pine cones, and dries them out completely. If you find your pine cones are still damp, allow them to âbakeâ for another 10-15 minutes. NOTE: If you bought your pine cones from a store already dry, you can skip this step.  Allow the pine cones to cool completely.
The Universal Product Code (UPC) is a barcode symbology (i.e., a specific type of barcode) that is widely used in the United States, Canada, the United Kingdom, Australia, New Zealand, and in other countries for tracking trade items in stores.he first UPC marked item ever scanned at a retail checkout was at the Marsh supermarket in Troy, Ohio at 8:01 a.m. on June 26, 1974, and was a 10-pack (50 sticks) of Wrigley's Juicy Fruit chewing gum. The shopper was Clyde Dawson and cashier Sharon Buchanan made the first UPC scan.
NOTE: In reality, an UPC-A symbol is an EAN-13 symbol with the first number system digit set to 0. For example, take the UPC-A code 075678164125. This same code, expressed as an EAN-13 symbol, would be 0075678164125.As you can see, we just slapped a leading 0 in front.Compare the original UPC-A symbol (top) to the EAN-13 symbol (bottom): At first glance, the two bar codes look different.NCODING EAN-13 (AND UPC-A) The encoding for EAN-13 (and UPC-A) bar codes is relatively straight-forward. To encode a value as an EAN-13 bar code, the checksum digit must first be calculated and the entire bar code, including check digit, may then be encoded as a sequence of bars and spaces.