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A colour that depends on the angle.
Also known as: Colour-shifting ink, Tilt feature banknote
The printed feature that changes colour or reveals an image as the document is tilted.
Changes colour or reveals an image as the document is tilted.
Contexts: Public information
Requires movement to verify, which makes it resistant to reproduction in any single image — a photograph of the note can only ever show one of its states.
Contexts: Public information
Designed to be checkable by an untrained person in a few seconds without equipment, which is a different design goal from the features that need magnification.
Contexts: Public information
A patch or figure that shifts between two colours, or reveals a hidden image, as the viewing angle changes.