Abstract: An EAS system employs multiple antennas which are in separate electrical circuits and do not overlap to avoid magnetic coupling. Each antenna is paired with each other antenna. The controls for the system employ multi-function amplifier filters (MAF) to perform a difference operation on the signals in each pair. The results are converted from analog to digital and directed to a digital signal processor (DSP). The DSP adjusts digital potentiometers to minimize the differences at the MAFs. The controls then operate at least one antenna to pulse generate an interrogation field. The controls monitor the antenna signals for additional signal at the MAFs. The DSP performs pattern recognition on additional signals at the MAFs to distinguish types of EAS tags.

Abstract: A system and method provides access to antennas of an electronic article surveillance system via WiFi and the Internet. Each antenna of the EAS system has a WiFi chip associated with its controls and the WiFi chip relays the antennas operating parameters as well as its reading of electromagnetic noise in its environment to the Internet. A remote technician can review the information provided by the antennas of the EAS system and optimize their operation with each other and their environments. In some embodiments, remote software can optimize the operation of the EAS system antennas. In some embodiments, the WiFi chip is an aftermarket addition.

Abstract: Embodiments of the current invention entail a highly visible tag that can be attached to a product at a highly visible location on the product at a store, but can easily be removed once the purchaser buys the product and takes it home. Once the purchaser gets the product home, they can remove it themselves and use it in public. Once the tag is removed, it cannot be reattached by the consumer. Depending on the store policy, the product may not be returned, or an extra fee charged for returning the garment, or other similar policies. Absence of a tag makes it clear that the buyer has removed the tag and provides an indication that the product, such as a garment has been used or worn in public. The tag is most effective for products that are used in public, such as garments. The tag may carry EAS technology.

Abstract: An anti-theft device monitors bottles. It is comprised of a two components hingably connected together. They can move from an open position to a closed position to enclose the neck of a bottle. One component has a first latch element and contains electronics including switches. The other component has a second latch element. The latch elements combine to hold the two components in the closed position. When the two components are moved to the closed position, and a bottle is in position, the bottle contacts elements which in turn change the states of associated switches. One of these elements also functions to retain the bottle on the tag. The anti-theft device may be armed or disarmed by remote devices. The latching elements may be releasably lockable such as by a magnet. The anti-theft device may have passcode protection capabilities.

Abstract: An EAS tag has an arming switch protruding from its body to detect when the EAS tag is being forcibly removed from an object to which it is attached. A plate covers the arming switch to provide a broader surface for interacting with the attached object. The plate is capable of floating and moving when it is impinged upon by an attached object. When moved by an object when the EAS tag is attached to an object, the plate actuates the arming switch and changes its state. This can arm the EAS tag or can be a step in the arming process of the EAS tag. When the EAS tag is forcibly removed from an object, the plate and arming switch are released, and electronics onboard the EAS tag determine an alarm condition.

Abstract: A highly visible single use tag prevents the fraudulent return of garments. Two members are connected by a hinge. The hinge allows the members to move from an open configuration to a closed configuration where the members form and enclose a space. Complementary latch elements on the members engage and hold the members in the closed configuration. At least one of the members has a tack extending inwardly into the space enclosed by the members. This tack pierces a garment intended to be protected by the tag and maintains the tag on the garment. At least one of the members has at least one perforated line across the width of the member. This perforated line allows that member to be pulled apart and the tag removed without the need of any tool to do so.

Abstract: An anti-theft device monitors bottles. It is comprised of a two components hingably connected together. They can move from an open position to a closed position to enclose the neck of a bottle. One component has a first latch element and contains electronics including an arming switch. The other component has a second latch element. The latch elements combine to hold the two components in the closed position. When the two components are moved to the closed position, and a bottle is in position, the bottle changes the state of the arming switch. One of the components, or both, may have a protrusion that engages a feature on the bottle to keep the tag in place on the bottle. The anti-theft device may be armed or disarmed by remote devices. The latching elements may be releasably lockable such as by a magnet. The anti-theft device may have passcode protection capabilities.

Abstract: An EAS tag includes a cap component with a tack shaft. The cap component is contoured to engage with a body component. The body component has a clutch for receiving and retaining the tack shaft. The shape of the body component and the cap component, along with the position of the tack shaft, provide an initial resistance to twisting the cap with respect to the body. Both the cap and body components may have additional features which interact or interlock to prevent the cap from being twisted. Additionally, the EAS tag may incorporate a staining agent-based benefit denial system. The EAS tag is further adapted to be reusable after actuation of the benefit denial system, and includes a visual indication of a compartment containing a staining agent to serve as a visual deterrent to shoplifters.

Abstract: An EAS system comprises a central circuit for sequentially generating signal bursts. At least one local transmitting antenna is positioned remote from the central circuit for receiving and propagating the signal bursts into an interrogation zone. A receiver is associated with the local transmitting antenna for detecting the presence of an electronic tag in the interrogation zone by means of a response tag signal from the electronic tag and transmitting the response tag signal to the central circuit. A synchronization device is provided for detecting the signal burst propagated from the local transmitting antenna, and controls the activation of the receiver for the purpose of receiving the response tag signal based on the timing of the signal burst.

Abstract: An electronic article surveillance (EAS) tag incorporates alternative theft deterrence systems. The security tag incorporates both a benefit-denial ink-based system and two independent EAS detection elements operating at two different frequencies such that the tag can alternatively be operated in two different systems. The security tag is further adapted to be reusable after ink ampoule breakage and includes a visual indication of ink to serve as a further visual deterrence to shoplifters.

Abstract: An EAS tag has an adjustable retention cable for attaching the tag to an irregularly shaped object. A clutch mechanism prevents the retention cable from being released without authorization. The tag may carry electronic components including a circuit board, microprocessor, battery, audible alarm generator, light emitting diode, anti-tamper switches, infrared communication port, and other communication electronics. The tag may also carry an EAS element such as a harmonic element or acousto-magnetic element. An EAS system with which the EAS tag is associated may communicate with the EAS tag and obtain information, arm, disarm, encode information, and otherwise reprogram the tag via the infrared communication port or other means.

Abstract: An EAS tag includes a cap with a tack shaft and a body with a clutch for receiving and retaining the tack shaft. An aperture in the body gives access to the clutch. The cap is concave and shaped to fit over the body, and the tack shaft extends into the concavity of the cap. The shape of the body and cap and the position of the tack shaft provide an initial resistance to twisting the cap with respect to the body. Both the cap and body may have additional features with interact or interlock to prevent the cap from being twisted. Additional, the cap may have areas of reduced thickness to induce breaking away of parts of the cap when excessive stress is induced in the cap.

Abstract: An electronic article surveillance system utilizing infrared communication is disclosed wherein added security is obtained by using dynamic passcode protection. The system includes tags, deactivators, a base control system and perhaps one or more remote management stations. Each tag, base station, remote station and deactivator includes an accurate clock generator, a microprocessor, infrared communication capabilities, and machine readable instructions encoded for performing an algorithm for generating multiple passcodes. At a specified time, each active tag possesses a changeable passcode. The base station further includes infrared communication capabilities with an infrared communication path between each tag and each base station, the path enabling interchange of information between each tag and each base station. Each tag replaces the passcode at a specified interval, or at a specified point in time.

Abstract: Active tags are disclosed. According to one aspect of the present invention, an active tag is made similar to a shell in shape. The tag includes two parts, one is referred to as a cover and the other one is referred to as a base. The base includes a trigger tip (e.g., a reset switch) that is engaged when the two parts are closed. In an exemplary application, the needle of the cover part goes through a piece of garment and is engaged into the cover. These two parts can be disengaged by a detacher that is typically controlled by a casher (e.g., at point of sale). One of the important features in the present invention is that the tag is active, which means the shell tag will set off an alarming audio if disengaged improperly or without authorization.