# US 9,437,090 B2 · Mobile EAS deactivator > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,437,090 B2 - Document ID: US9437090B2 - Status: Granted - Kind: B2 - Application number: 14/211,798 - Filed: 2014-03-14 - Published: 2014-09-18 - Granted: 2016-09-06 - Earliest claimed: 2013-03-14 - Assignees: Tyco Fire & Security GmbH - Applicants: Ronald B. Easter; Douglas A. Drew - Inventors: Ronald B. Easter; Douglas A. Drew - Web page: https://patentgrep.com/patent/US9437090B2 ## CPC - G08B 13/2411: {Tag deactivation} - G07G 1/00: Cash registers - G07G 1/12: electronically operated - G08B 13/246: {Check out systems combined with EAS, e.g. price information stored on EAS tag (anti-theft systems in point of sale systems G07G3/003)} - H01F 13/006: {Methods and devices for demagnetising of magnetic bodies, e.g. workpieces, sheet material (for erasing of information on magnetic record carriers G11B5/00)} - G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS - G07G: REGISTERING THE RECEIPT OF CASH, VALUABLES, OR TOKENS - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES ## Abstract A deactivator device for a mobile Point of Sale (mPOS) systems includes a pair of spaced apart, fixed position electromagnets positioned and configured such that magnetic fields generated by the electromagnets aid one another to form a combined magnetic field; a battery; a capacitor; and an electronics assembly including a microcontroller configured to control storage of energy from the battery in the capacitor and to selectively provide a deactivation or activation pulse from the capacitor to the electromagnets. The components may be positioned in a housing configured for attachment to a mPOS mobile device. ## Claims ### Claim 1 A deactivator device for a mobile Point of Sale (mPOS) system, comprising: a pair of spaced apart, fixed position electromagnets positioned and configured such that magnetic fields generated by the electromagnets aid one another to form a combined magnetic field that is of sufficient strength to deactivate a security tag in proximity to the mPOS system; a battery; a capacitor; an electronics assembly including a microcontroller configured to control storage of energy from the battery in the capacitor and to selectively provide a deactivation or activation pulse from the capacitor to the electromagnets; and a housing having a mechanical coupling mechanism configured to mechanically attach the deactivator device to an exterior surface of a mPOS device, the housing having a multi-dimensional form factor which is approximately equal to or smaller than a multi-dimensional form factor of the mPOS mobile device. ### Claim 2 (depends on 1) The deactivator device according to claim 1, wherein each electromagnet includes a linear core with an electrically conductive coil wrapped thereabout. ### Claim 3 (depends on 2) The deactivator device according to claim 2, wherein one of the electromagnets is configured such that an upper end defines the north pole thereof and the other of the electromagnets is configured such that the lower end defines the north pole thereof. ### Claim 4 (depends on 1) The deactivator device according to claim 1, wherein the capacitor is positioned between the spaced apart electromagnets. ### Claim 5 (depends on 4) The deactivator device according to claim 4, wherein the capacitor has a depth approximately equal to a depth of the electromagnets. ### Claim 6 (depends on 1) The deactivator device according to claim 1, wherein a return bar is positioned between the electromagnets and the electronics assembly. ### Claim 7 (depends on 1) The deactivator device according to claim 1, wherein the microcontroller provides the deactivation or activation pulse upon receipt of an activation signal from a trigger. ### Claim 8 (depends on 1) The deactivator device according to claim 1, wherein the microcontroller provides the deactivation or activation pulse in a cyclical manner by cyclically opening and closing a switch between the capacitor and the electromagnets. ### Claim 9 (depends on 1) The deactivator device according to claim 1, wherein the deactivation or activation pulse utilizes a peak energy of approximately 0.5 Joules or less. ### Claim 10 (depends on 1) The deactivator device according to claim 1, wherein the deactivation or activation pulse is a decaying alternating sinusoidal current waveform. ### Claim 11 (depends on 1) The deactivator device according to claim 1, wherein the electromagnets, the battery, the capacitor and the electronics assembly are positioned within a housing. ### Claim 12 (depends on 11) The deactivator device according to claim 11, wherein the battery is rechargeable and the housing defines a charging input associated with the battery and microcontroller to facilitate charging of the battery. ### Claim 13 (depends on 11) The deactivator device according to claim 11, wherein a trigger in communication with the microcontroller is supported by the housing. ### Claim 14 (depends on 1) The deactivator device according to claim 1, wherein the housing includes one or more clips configured to couple the housing to the mPOS device. ### Claim 15 A mobile Point of Sale (mPOS) assembly comprising: a mPOS device configured to carry out at least one point of sale transaction; and a deactivator device including: a pair of spaced apart, fixed position electromagnets positioned and configured such that magnetic fields generated by the electromagnets aid one another to form a combined magnetic field; a battery; a capacitor; an electronics assembly including a microcontroller configured to control storage of energy from the battery in the capacitor and to selectively provide a deactivation or activation pulse from the capacitor to the electromagnets; and a housing having (1) a mechanical coupling mechanism configured to mechanically attach the deactivator device to an exterior surface of the mPOS device and (2) a multi-dimensional form factor which is approximately equal to or smaller than a multi-dimensional form factor of the mPOS device. ### Claim 16 (depends on 15) The mPOS assembly according to claim 15 wherein the electromagnets, the battery, the capacitor and the electronics assembly are positioned within a housing. ### Claim 17 (depends on 16) The deactivator device according to claim 16 wherein the mechanical coupling mechanism includes one or more clips.