Overt security feature

Also referred to as Level 1 security features, these are features that are apparent to the human senses – especially the senses of sight and touch – without the need for additional readers and instruments. Such features are designed to enable all stakeholders,...

Offset printing

The technique whereby ink is spread on a metal plate with etched images, then transferred to an intermediary surface such as a rubber blanket, and finally applied to paper by pressing the paper against the intermediary surface. Also known as lithography. Offset is the...

Optically variable device (OVD)

Overt, Level 1, security features with dynamic characteristics that change according to the viewing angle – for example from one colour to another, or from one image to another.