I believe most official / legal documents have a variety of security features, including watermarks. Watermarks are usually visible when you hold a document up to light, but there are SO many dfferent security tools.
Like how USDollars have those little red & blue silk threads in them, the strip, writing around the portrait; all sorts of wild stuff.
That's likely called a "watermark"
I believe most official / legal documents have a variety of security features, including watermarks. Watermarks are usually visible when you hold a document up to light, but there are SO many dfferent security tools.
Like how USDollars have those little red & blue silk threads in them, the strip, writing around the portrait; all sorts of wild stuff.