Apparatus and method for selectively permitting and resisting reading of radio frequency chips
AssigneeOpsec Security Group, Inc.
InventorDavid F. Campbell
Life of this patent
Estimating the term…
Abstract
A shield for use in resisting reading of radio frequency chips includes a flexible non-metallic substrate having a metallic coating. The shield may be incorporated into a book such as a passport, an envelope, a folder, or removably adhered to an article having a radio frequency chip disposed thereon.
Claims48
A shield for a radio frequency chip, comprising a flexible nonmetallic substrate having a metal coating, the shield being structured to be removably retained adjacent to the radio frequency chip, whereby the shield creates interference with radio frequency waves transmitted or received by the radio frequency chip and thereby resists reading the radio frequency chip.
A book having:
- a front cover;
- a back cover;
- a plurality of pages therebetween;
- a radio frequency chip disposed on or within a location selected from the front cover, the back cover, or one of the plurality of pages;
- and
- a shield for a radio frequency chip, comprising a flexible nonmetallic substrate having a metal coating, the shield being disposed on or within a location selected from the front cover, the back cover, or one of the plurality of pages, the location of the shield being different from the location of the radio frequency chip, whereby the shield resists reading the radio frequency chip when the book is closed, and permits reading the chip when the book is open.
A container, comprising:
- a pair of sides;
- and
- a shield disposed on or within one of the sides for shielding a radio frequency chip, comprising a flexible nonmetallic substrate having a metal coating, whereby the shield creates interference with radio frequency waves transmitted or received by a radio frequency chip disposed within the container, and thereby resists reading the radio frequency chip.
A method of making a shield, comprising:
- providing a flexible nonmetallic shield substrate;
- and
- providing a metallic coating over the nonmetallic substrate.
A method of shielding a radio frequency chip from unauthorized reading, comprising:
- providing a shield comprising a flexible nonmetallic substrate having a metal coating, the shield being structured to be removably retained adjacent to the radio frequency chip;
- and
- placing the shield in sufficiently close proximity to the radio frequency chip to create interference with radio frequency waves transmitted or received by the radio frequency chip, thereby resists reading the radio frequency chip.
Dependencies are inferred from the claim text.