Every masterpiece should bear a signature as a mark of its authenticity. Barca-Velha is an icon of the art of winemaking. The 2011 harvest of the Barca Velha wine contains a bottle seal with a QR code that, when read by the cell phone camera, allows you to download the authenticity app AuthenticBV. In this app, there is a reader that allows you to check the authenticity of the bottle seal using QR code and UniQode technologies.