Overview

• The temporary adhesive tattoo changes color in under one second upon contact with gamma-hydroxybutyrate.
• Lab tests show the sensor can detect GHB at concentrations as low as 0.01 micrograms per milliliter across beer, vodka, whisky, soju and coffee.
• The color change remains visible on the skin for up to 30 days, offering a potential forensic record of chemical tampering.
• The semitransparent sticker is inexpensive to manufacture, easy to apply and designed to resemble decorative body art.
• Researchers at Sungkyunkwan University and the Korean Research Institute of Bioscience and Biotechnology are now moving toward pilot production with plans for near-term commercialization.