Security structure, particularly for a security document and/or a valuable document

A security structure configured to be at least partially incorporated into or affixed to an article, the structure comprising:

• a mount,
• at least one electronic device supported by the mount,
• at least one nonelectronic security and/or decorative element visible to the naked eye, supported by the mount, covering only a portion of a face of the mount and having no effect on the operation of the electronic device, and/or
• at least one amplifying antenna coupled to the electronic device, supported by the mount,
• the electronic device being at least partially visible to form with the security and/or decorative element a design chosen from particularly an ellipse, a circle or a polygon,
• a geometric shape
• a written symbol,
• an image of a recognizable object.

An article comprising:

• at least one layer, supporting an item of information in the form of a first visible design,
• a security structure secured to said layer and comprising:
• a mount,
• at least one electronic device supported by the mount,
• at least one security and/or decorative element arranged to form with the electronic device a second design having a link with the item of information.