Welsh codes
They've been using Baa-codes to identify their sheep for a long time so they have plenty of experience.
Welsh scientists are working towards a complete DNA "barcode" record of the country's 1,143 flowering plants. The Barcode Wales initiative forms part of the Barcode of Life plan to establish a database of standardised IDs for all the world's species, comprising a "very short genetic sequence from a standard part of the genome …