South Korean Scientists Develop DNA Barcode to Replace Traditional Barcodes

South Korean scientists at Ekhua University have developed a DNA barcode system to replace traditional barcodes. This system uses DNA sequences sprayed on products, making it difficult to forge. The DNA is protected by an inorganic bubble, preventing degradation. This nano DNA barcode system (NDBS) enhances consumer safety by ensuring food authenticity and identifying contamination.

What materials are used to protect the DNA strand in the new barcode system?

What challenges does the DNA coding system address in terms of food authenticity?