Figure 1 from: Diazgranados M, Funk V (2013) Utility of QR codes in biological collections. PhytoKeys 25: 21-34. https://doi.org/10.3897/phytokeys.25.5175

Figure 1 - Examples of potential uses of QR codes in Natural History collections. A "Ruilopezia cardonae (Cuatrec.) Cuatrec. (coll. M.Diazgranados & R.Sánchez 3257). Cited in: Diazgranados M (2012) A nomenclator for the frailejones (Espeletiinae Cuatrec., Asteraceae). PhytoKeys 16: 1–52 (http://www.pensoft.net/journals/phytokeys/article/3186/abstract/)" B "Genbank Accession JN837330: http://www.ncbi.nlm.nih.gov/nuccore/JN837330.1" C "Photographs of this collection: http://espeletia.org/galleries/main.php?g2_view=tagtree.VirtualAlbum&g2_tags%5B0%5D=815&g2_albumId=7" D "http://en.qrwp.org/Sunflower" E "Statistics of Fig. 1D: http://qrwp.org/stats.php?path=Sunflower" F "http://espeletia.org/". Readability of these QR codes was tested using an iPhone 4 with Qrafter and Quick Scan.