摘要:
A resonant circuit for use with a radio-wave detection system for the prevention of shoplifting or the like, which is formed on a flexible substrate and has a coil and capacitor circuit whereby the capacitor has an indented area in the dielectric of the capacitor to promote disablement of the circuit when exposed to a strong electromagnetic field. Upon exposure to a strong electromagnetic field, an electrical short forms across the dielectric of capacitor in the indented area. Because the short is fragile and can be opened by flexure of the circuit, an island of reinforcing material is formed in the indented area, such that when the substrate is flexed, the indented area remains rigid to protect the short. The indented area can be further stress-relieved by introducing a gap in the conductors forming the capacitor plates.
摘要:
A security tag that can be attached to an item or items that provides a zero or low impact to the item or items such as elegant or soft goods. The security tag includes a security element that is enclosed within a pliable material that is coupled to the item or items it is protecting by either a lanyard or by passing a portion of the unfinished garment through aperture(s) in the pliable material. The lanyard can take on various compositions and can couple to the pliable material using different latching mechanisms. No puncturing, piercing or adhesive attachment to the elegant or soft goods occurs, thereby making a “zero or low impact” on the item while also making a pleasant presentation to customers when the item (or items) is displayed.
摘要:
Security labels and tags including elements and methods of making them are disclosed. The elements are in the form of an oriented polymer layer, conductive traces clad to the polymer layer to form an open loop forming a window in the interior of the loop and an open support framework extending into the window to support the polymer layer in the window. In some embodiments the open support framework is in the form of parallel, interleaved linear extensions from the conductive traces which extend into the window. In other embodiments the open support framework is in a pattern of intersecting sections (e.g., a fishbone pattern) located in the window.
摘要:
A tracking system uses RFID (radio frequency identification) tag technology to facilitate the identification and tracking of items in an environment through a technique known as shadowing. As an object or target moves within a pre-described detection zone with communicating antenna and RFID sensors, the object or target blocks the line of sight between respective antenna and sensors, preventing electromagnetic coupling between the sensor and the antenna and thus casting an electromagnetic shadow along the line of sight. One approach of this invention uses this shadow technique to perform functions such as theft (shrink) deterrence/ detection; tracking the motion of objects through an environment by monitoring the shadow; and correlation analysis of people shadows to tagged items (e.g., merchandise, articles) to foster marketing and merchandising effectiveness.