When exposed to certain types light, invisible ink can reveal data. This type of invisible ink is used on products like paper, plastics, and metals. The ink is hard to see with the naked eye but can be seen under a UV light or filter. This can help track or mark objects which need to be protected. This ink is also known as a yellow dot code and can be used to record information such as the printer model and date of manufacture.
Glasses with ink that is invisible can be used to protect eyes from harmful ultraviolet rays. They can reduce digital eye strain that occurs when people spend a long time using electronic devices. These glasses are especially useful for those who work in industries like manufacturing and construction where there is a high risk of eye injury from flying debris or chemicals.
The ability to read barcodes on playing cards is another benefit of invisible ink lenses. These glasses are similar to sunglasses and other players will not be aware that they’re being used to cheat. Poker players who are looking to gain an edge over their opponents love these glasses. This type of glass is made of high-quality materials, and the design is sturdy enough to withstand repeated use.