The present invention relates to a wearable device and a system. The wearable device (20, 40) comprises an electronic circuit (21), a power supply (22), a switching circuit (23, 43) coupled between the electronic circuit and the power supply, and an electromagnetic field detection circuit (24) coupled to the switching circuit (23, 43) for detecting an electromagnetic field generated by an NFC transmitter within the detection range of the electromagnetic field detection circuit and for generating a trigger signal if an electromagnetic field generated by an NFC transmitter is detected within the detection range of the electromagnetic field detection circuit. The switching circuit (23, 43) comprises a flip-flop (231) or a transistor circuit (431) including an input transistor (432) and a fuse (433) to switch the connection between the electronic circuit and the power supply on in response to the trigger signal.

The present invention relates to a wearable device and a system. The wearable device (20, 40) comprises an electronic circuit (21), a power supply (22), a switching circuit (23, 43) coupled between the electronic circuit and the power supply, and an electromagnetic field detection circuit (24) coupled to the switching circuit (23, 43) for detecting an electromagnetic field generated by an NFC transmitter within the detection range of the electromagnetic field detection circuit and for generating a trigger signal if an electromagnetic field generated by an NFC transmitter is detected within the detection range of the electromagnetic field detection circuit. The switching circuit (23, 43) comprises a flip-flop (231) or a transistor circuit (431) including an input transistor (432) and a fuse (433) to switch the connection between the electronic circuit and the power supply on in response to the trigger signal.

Various switchable RFID devices are disclosed. These switchable RFID devices may include one or more RFID tags and one or more switches. Some of these one or more switches are optionally wireless. In various embodiments, the switchable RFID devices include cellular phones, security devices, identity devices, financial devices, remote controls, and the like. The switchable RFID devices are optionally disposed in a cellular phone.

There is described a method of determining a phase value for an NFC card emulating device that enables said NFC card emulating device to communicate in phase with an NFC reader device while utilizing active load modulation, wherein the NFC card emulating device comprises a card antenna and the NFC reader device comprises a reader antenna, the method comprising receiving a reader signal from the NFC reader device at the NFC card emulating device through coupling of the card antenna and the reader antenna, the reader signal comprising a subcarrier modulation; estimating a resonance frequency of a system corresponding to the coupled card antenna and reader antenna based on the received communication signal; and determining the phase value based on the estimated resonance frequency and a set of parameters that represents a predetermined reference system. Furthermore, an NFC card emulating device, an NFC system, and a computer program are described.

A system is provided that includes a rack including mount positions to accept electronic equipment modules that are rack mountable and equipped with respective RFID tags, and a RFID reader array including RFID readers each of which is associated with a respective mount position, and has a read field that among the mount positions extends into only the respective mount position. Processing circuitry causes an RFID reader to radiate an interrogation signal within its read field, and in response, receive module identifiable information from an RFID tag of an electronic equipment module mounted at the mount position. A signal including the module identifiable information and mount position identifiable information is transmitted to the processing circuitry, and a second signal to a computer configured to identify the electronic equipment module from the module identifiable information, and locate the electronic equipment module at the mount position from the mount position identifiable information.

A physical access control (PAC) system configured to perform a two-factor authentication prior to granting access to a secure area. The PAC system includes an access point device configured to perform facial recognition on a person proximate to the access point device, and perform wireless handshake with a mobile device associated with the person prior to granting or denying entry to the secure area.

Aspects described herein may allow for a payment card assembly including a payment card having a first surface, an opposed second surface, and an aperture extending through the payment card from the first surface to the second surface. An insert may be removably received in the aperture. Each of a plurality of identification elements may be configured to be removably received in the aperture and have an identification characteristic different than an identification characteristic of each of the other identification elements.

A transaction card construction and computer-implemented methods for a transaction card are described. The transaction card has vector-formatted visible information applied by a laser machining system. In some embodiments, systems and methods are disclosed for enabling the sourcing of visible information using a scalable vector format The systems and methods may receive a request to add visible information to a transaction card and capture an image of the visible information. The systems and methods may capture data representing the image. The systems and methods may also determine an ambient color saturation of the image. Further, systems and methods may translate the image based on the ambient color saturation of the image. The systems and methods may also map the translated image to a bounding box and convert the mapped image into vector format. In addition, the systems and methods may provide the converted image to a laser machining system.

There is described a method of determining a phase value for an NFC card emulating device that enables said NFC card emulating device to communicate in phase with an NFC reader device while utilizing active load modulation, wherein the NFC card emulating device comprises a card antenna and the NFC reader device comprises a reader antenna, the method comprising receiving a reader signal from the NFC reader device at the NFC card emulating device through coupling of the card antenna and the reader antenna, the reader signal comprising a subcarrier modulation; estimating a resonance frequency of a system corresponding to the coupled card antenna and reader antenna based on the received communication signal; and determining the phase value based on the estimated resonance frequency and a set of parameters that represents a predetermined reference system. Furthermore, an NFC card emulating device, an NFC system, and a computer program are described.

A smart lock box system is described. One implementation of the lock box system includes a locking mechanism configured to securely hold a cover over a compartment. The lock box system includes a receiver capable of receiving signals from a user device. The lock box system also includes a processor configured to identify an access message in a received signal, a service to verify that the access message was provided by an authorized party, and cause the locking mechanism to be released in response to verifying that the access message was provided by the authorized party. The open/close events are recorded in a distributed ledger to document which user's device was used to access a given property at a given time. Furthermore, the smart lock box system utilizes a push notification service, based on user device's GPS, to inform owners when to depart/return to the property.