In some implementations, a printing system may include a card printer that includes a printing controller and a marking device. The card printer may be configured to receive a first printing instruction or a second printing instruction associated with printing an account identifier on a card. The card printer may receive one of the first printing instruction or the second printing instruction based on whether a risk score, associated with the account identifier, satisfies a threshold. The card printer may print a full account identifier, associated with the card, on a surface of the card based on receiving the first printing instruction. The card printer may print the card without the full account identifier on the surface of the card based on receiving the second printing instruction.

Digital transaction apparatus including a Data Assistance Device (DAD), including a user interface that is operable to at least select data, and a DAD transmitter, a Digital Transaction Card (DTC), including a Digital Transaction Processing Unit (DTPU), and a DTC receiver, wherein the DAD and DTC are operable to transfer data from the DAD to the DTC and when subsequently using the DTC to effect a digital transaction, the DTC operates in accordance with the data selected and transferred from the DAD to the DTC, wherein the digital transaction apparatus further includes a remaining battery life estimation system operable to detect an occurrence of at least one electrical event and to measure the duration of the at least one electrical event, each electrical event having an associated power usage amount, and, subsequent to detection of an occurrence of an at least one electrical event, the remaining battery life estimation system calculates the total energy usage using the associated power usage amount in respect of the at least one electrical event and the duration of the at least one electrical event.

Aspects of the disclosure relate to a smart contactless card to detect real-time suspicious card readers or other fraudulent devices. Prior to a transaction, the smart contactless card detects suspicious card readers or fraudulent devices. An alert may be generated upon detection of any suspicious or fraudulent card reader. In some arrangements, the smart contactless card may utilize machine learning models or machine learning capabilities to detect suspicious card readers. The smart contactless card may pair with other smart contactless cards to detect and alert users to suspicious card readers or other fraudulent devices. The paired smart contactless cards may share information regarding suspicious card readers or fraudulent devices over a semi-autonomous data-sharing network. A vulnerability score may be generated and used to determine if a card reader or other payment device is suspicious.

Aspects described herein may allow for detecting fraudulent transaction requests using light sensors on smartcards. A computing device may receive, from a terminal, a request to approve a transaction. The request may comprise a timestamp corresponding to a time when the transaction was requested, a transaction type associated with the transaction, and an identification of a card associated with the transaction. The computing device may also receive, from one or more light sensors associated with the card, light data. The light data indicates an amount of ambient light during a time period when the transaction was requested. The computing device may determine, based on the transaction type, a model of expected ambient light. If the light data corresponds to the model, the computing device may send, based on the determination that the light data corresponds to the model, an approval of the request.

In some implementations, a point of sale (POS) system may store a card read failure indication based on detecting that a transaction terminal failed to read information associated with a transaction card, wherein the card read failure indication includes information that indicates whether the transaction terminal failed to read the information associated with the transaction card from a chip, a magnetic stripe, or a contactless device. The POS system may transmit information associated with the card read failure indication to an external device based on detecting a successful transaction subsequent to the transaction terminal failing to read the information associated with the transaction card, wherein the information associated with the card read failure indication is transmitted to enable the external device to determine whether one or more of the transaction card or the transaction terminal is defective.

Methods and systems are described for verifying an identity of a user through contextual knowledge-based authentication. The system described uses contextual knowledge-based authentication. By verifying an identity of a user through contextual knowledge-based authentication, the verification is both more secure and more intuitive to the user. For example, by relying on confidential and/or proprietary information, the system may generate verification questions, the answers to which are known only by the user.

A bridge service is provided to support multi-user simulated contactless cards that in response to receiving a request to provision a secure element with payment card profile information of a user, provisions a token representing the payment card profile, converts the token representing the payment card profile into a format for the payment application; and provides the payment card profile to the payment application, the payment card profile comprising a single use key. The bridge service enables simulated contactless cards to store payment card information for a user on volatile memory instead of the persistent, secure element memory.

A multi-function transaction card may include a card body having dimensions that are in accordance with a standard for transaction cards, an output device on the card body, and a secure element within the card body. The multi-function transaction card may pair, via a wireless connection, the multi-function transaction card with a terminal. The multi-function transaction card may receive, from the terminal, information associated with a transaction. The multi-function transaction card may generate, based on the information associated with the transaction, and using a cryptographic key, an authorization request cryptogram (ARQC), wherein the cryptographic key is stored in the secure element. The multi-function transaction card may generate, based on the ARQC, a machine-readable code. The multi-function transaction card may display, using the output device, the machine-readable code.

There are provided systems and methods for identifying transaction processing retry attempts based on machine learning models for transaction success. A service provider, such as an electronic transaction processor for digital transactions, may detect a failure of data processing for a transaction when processed with a separate data processing system, such as a card processing system for payment cards. In order to minimize cost and wasted resources for retrying transactions that are likely to further fail, a machine learning model may be implements that generates a predictive score for whether a failed transaction is likely to be successful if retried with the data processing system. The predictive score may be used to predict a probability of success, which may then be used with a cost function to determine a cost to retry the failed transaction and a cost to stop a retry of the failed transaction.

A method, apparatus, and system of activating and using a contactless card are disclosed. A method includes receiving a transaction card application for a contactless transaction card from an applicant; issuing a contactless transaction card based on the transaction card application, wherein the contactless transaction card comprises a uniform resource locator (URL) embedded thereon; and activating the contactless transaction card in response to receiving information from a contactless communication between the contactless transaction card and a customer device, wherein the contactless communication causes access to a web site associated with the URL.