Aspects described herein may allow for a payment card having a first surface and an opposed second surface. A plurality of surface irregularities is formed on the first surface, with the plurality of surface irregularities defining alphanumeric characters. A phosphorescent coating is formed on at least a portion of the surface irregularities.

Embodiments of the present disclosure provide a device, system, methods and components related to a modular card. Example components of the modular card include a thin rectangular rear plate, a thin rectangular front plate overlying the rear plate, a first plurality of fasteners fixed to the thin rectangular front plate, a second plurality of fasteners fixed to the thin rectangular rear plate, the second plurality of fasteners being configured to be removably engaged with the first plurality of fasteners; a magnetic strip, and/or an integrated circuit. In operation a user may remove and/or replace various components to customize the modular card. Some customizations include altering the accounts to which the modular card relates. In some example, the modular card may include components which relate to different accounts.

Systems and methods are described related to using flexible circuitry in a payment accessory. In one embodiment, a payment device comprises a computing device and a memory. The computing device is configured to store a first biometric identifier for a first user and a second biometric identifier for a second user. The first biometric identifier is associated with a first transaction account and the second biometric identifier is associated with a second transaction account. A scanned biometric identifier of the first user is received. The first user is authenticated by matching the scanned biometric identifier to the first biometric identifier. The transponder is activated in response to matching the scanned biometric identifier to the first biometric identifier. The first transaction account is transmitted to a point of sale (POS) device for processing the payment transaction based on the first biometric identifier being linked with the first transaction account.

A two part dual layer transaction device comprising a computerized master unit powered by rechargeable battery, the master unit capable of connecting wirelessly to a data network and accessing at least one network server, the master unit having a length, a width, and an internal volume, and a transaction card element having a form factor acceptable for use as a debit or credit card, wherein the transaction card element may be docked or otherwise coupled to the master unit in an idle state and may be uncoupled by the user for the purpose using or cleaning the card element.

Various switchable devices, e.g., cellular telephones, including inductive and/or RF antennas are disclosed. These switchable devices may include one or more switches and a biometric sensor. Some of these one or more switches are optionally wireless and/or manual. In various embodiments, the switchable devices include are included within cellular phones, security devices, identity devices, financial devices, remote controls, and the like. The switchable devices are optionally configured to perform financial transactions.

A method of protecting transactions in a card processing system from fraud comprises issuing a payment card having a first PAN number, a second PAN number and at least one of a magnetic strip or a smart chip. The first PAN number is encoded in machine readable language on each of the at least one of the magnetic strip or the smart chip and not displayed in human readable form on the payment card. The second PAN number is displayed in human readable form on the payment card and is not encoded in machine readable language on either of the at least one of the magnetic strip or the smart chip. The first PAN number is valid in the card processing system only for card-must-be-present transactions and the second PAN number is valid in the card processing system only for card-not-present transactions.

A wearable payment device, such as a finger ring worn by a user, communicates payment data to a payment reader that uses the payment data in order to request a payment transaction. Such wearable payment device may be conveniently carried by and accessible to the user such that utilization of the payment device for the payment transaction is less burdensome for the user, thereby encouraging use of the payment device for payments. Indeed, in some cases, such as when the payment device is implemented as a finger ring or other type of jewelry, the user may be encouraged to carry the payment device in an exposed manner such that it is readily available for the payment transaction without the user having to search in a wallet, pocket, or purse.

A payment card (e.g., credit and/or debit card) is provided with a magnetic emulator operable to act as a magnetic stripe read-head detector and a data transmitter. A multiple layer flexible PCB may be fabricated to include multiple magnetic emulators. An emulator may include a coil that includes magnetic, ferromagnetic, or ferromagnetic, material in the coil's interior. Coils may be associated with zones. As a read-head is detected to move from zone-to-zone, coils may be activated to transmit information in those zones.

A method and system for communicating estimated blood loss parameters of a patient to a user, the method comprising: receiving data representative of an image, of a fluid receiver; automatically detecting a region within the image associated with a volume of fluid received at the fluid receiver, the volume of fluid including a blood component; calculating an estimated amount of the blood component present in the volume of fluid based upon a color parameter represented in the region, and determining a bias error associated with the estimated amount of the blood component; updating an analysis of an aggregate amount of the blood component and an aggregate bias error associated with blood loss of the patient, based upon the estimated amount of the blood component and the bias error; and providing information from the analysis of the aggregate amount of the blood component and the aggregate bias error, to the user.

In certain embodiments, an electronic device can include a secure element that detects a mechanical input. The mechanical input can correspond to an instruction to transmit securely stored payment information to another device and/or to release such information to an application on the device (e.g., for use in an in-app commerce transaction). This feature can inhibit or prevent unauthorized transmission of payment information. When the mechanical input is detected, payment information can be transmitted to a point of sale (POS) terminal (e.g., via near-field communication) or released to an app on the device. Further, a user can either use default payment information or interact with the device (before or after providing the mechanical input) to select appropriate payment information for a transaction. For example, the user can select between credit cards, debit cards and/or stored-value cards (e.g., transit card).