The scratch-off ink is falsely attached to the surface of the material and can be scraped off with harder materials such as coins. QR Code, barcode, serial number and other information can be covered under the scratch-off.
You should use a coin to scrape off the scratch-off ink to see the information hidden in the bottom layer.
Scratch-off Ink with OVI(Optical Variable Ink)、OCEP(Optical Changeable Effect Pigments)
Scratch-off Ink can also be combined with OVI (Optical Variable Ink) and OCEP (Optical Changeable Effect Pigments)
The OVI or ICEP ink has good anti-counterfeiting identification, and you can see different colors with different angle of view. The scratch-off ink with OVI or OCEP can be used for lottery scratch cards, color coupons, anti-counterfeiting verification labels and other products.