Fake watches are everywhere. It is not always easy to tell the difference between a real or fake luxury watch. Nanoga has developed a technique, involving engraving a nanoscopic watermark onto glass or ceramic, which make it impossible for luxury products to be counterfeited.
More items like this: here
The watermark is invisible to the naked eye but shows up under ultraviolet light. The above video provides more information on this technology.
[Source]
*Disclaimer*Our articles may contain affiliate links. As an Amazon Associate we earn from qualifying purchases. Please read our disclaimer on how we fund this site.