To conduct a payment transaction at a merchant's point of sale using a mobile device, the mobile device initiates an authenticated communication session with a payment agent. The payment agent is an entity responsible for facilitating a payment transaction between the merchant and purchaser via their respective financial institutions. During the authenticated communication session, response to an input indicating the user of the mobile device wishes to make a payment, the mobile device generates a unique payment key that is based on at least one unique data of the mobile device. The mobile device transmits the payment key to the payment agent, and then transfers a copy of the payment key to the point of sale system. The merchant's payment system that transmits the payment key to the payment agent in a transaction request. The payment agent then verifies that the received payment key is the same as they received from the mobile device, and that the authenticated communication session is still valid, and then approves the transaction.

A tamper resistant device can be used for an integrated circuit card. The device includes memory storing a first security domain that includes a telecommunication profile and a second security domain that includes an application profile. A first physical interface is configured to be coupled to a baseband processor configured to operate with a mobile telecommunications network. A second physical interface configured to be coupled to an application processor. The first physical interface configured to allow the baseband processor to access the telecommunication profile and the second physical interface is configured to allow the application processor to access the application profile. The tamper resistant device is configured to enable accessibility to the application profile if corresponding commands are received at the first interface and to enable accessibility to the telecommunication profile if corresponding commands are received at the second interface.

A system and method for predictive pre-authorization of subsidiary accounts using passive biometrics which uses wireless mobile devices and biometric scanning to automatically predict pre-authorized transaction amounts for a plurality of subsidiary accounts in a secure manner without requiring the customer to handle his or her mobile device. The system and method uses a payment facilitation device at the business location which automatically detects and recognizes registered mobile devices, displays a photo of the customer to a business employee for identity confirmation, verifies the customer with a biometrics verification database, generates a pre-authorization amount with an authorization generator, and automatically deducts payments for purchases from a pre-authorized customer account. The system and method may further include capabilities for facilitating offline transactions using accounts enabled as offline accounts.

There are provided systems and methods for a modular mobile point of sale device having separable units for configurable data processing. A modular device may include a main unit that includes data processing features to allow for a mobile point of sale, including a data entry unit for payment data, a communication component to secure communicate that data to a centralized transaction processor, and a processing unit to receive the data and instruct the centralized to process the data with an online service provider. The module device may also be physically and communicatively coupled to additional modules that may increase the on-device functionality of the main unit, include a module to allow user input and additional modules to accept other types of transaction input. On detection of a connected unit, the main unit may secure connect to and authenticate each attached module.

A computer-implemented method of authenticating the identity of a user is provided, where the user is associated with a computer signature and is in possession of a cell phone. The method involves obtaining a current geographical location of the cell phone, determining if the computer signature is associated in a database with a stored geographical location of the phone, and, if the computer signature is associated in the database with a stored geographical location, comparing the stored geographical location to the current geographical location of the phone.

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.

Systems and methods for managing concurrent secure elements on a mobile device to coordinate with an application or “app” running on the mobile device and an appropriate communications protocol for conducting transactions using the mobile device include: informing, by the processor, the reader device of a preferred app and a communication protocol usable by the preferred app; receiving, by the processor, information about which apps and communication protocols are supported by a reader for processing a transaction; locating, by the processor, a secure element supporting an app and a communication protocol supported by the reader; channeling the communication protocol for the specific configuration of the app and the supporting secure element; activating the secure element that supports the app; and processing, with the activated secure element, using the supported app and communication channel, the transaction with the reader.

A method and system for payments for mobile phone payments with a disabling feature is disclosed. The method includes activating a mobile phone containing contactless payment systems, and having a timeout feature disable the contactless payment systems after a set period of time.

A method for processing, by a processing entity, of an authorization to implement a service and/or access an item. The method includes: reception, from a requesting device, of a request for implementing a service and/or accessing an item; searching for an indicator of dependency from at least one piece of data of said request for implementation; when an indicator of dependency is present, obtaining an authorization from a verification device to implement said service and/or access said item.

A client device comprises a first secure element and a second secure element. The first secure element comprises a first computer-readable medium having a payment application comprising instructions for causing the client device to initiate a financial transaction. The second secure element comprises a second computer-readable medium having a security key, a payment instrument, stored authentication data and instructions for generating a secure payment information message responsive to the payment application. The secure payment information message comprises the payment instrument and is encrypted in accordance with the security key.