Abstract: Authentication for payment transaction includes receiving, by a point-of-sale (POS) terminal, an indication that a payment account of a cardholder is associated with a mobile device and receiving a second indication of physical possession of a payment card by a merchant. The authentication includes receiving a purchase request for an authorization of exchange from the payment account of the cardholder to the merchant and assigning a transaction identifier to the request for the authorization of the exchange. The authentication includes transmitting the request for authorization of the exchange from the cardholder payment account to the merchant and the transaction identifier. The authentication includes receiving an indication that an authentication identifier is associated with the transaction identifier. The authentication includes receiving a copy of the authentication identifier, facilitated by the cardholder.

Abstract: Authentication includes receiving an indication of physical possession of a payment card by a merchant and receiving a purchase request for an authorization of an exchange from the payment account of the cardholder to the merchant. Authentication includes assigning a randomized transaction identifier to the request for the authorization of the exchange. The method also includes transmitting the request for the authorization of the exchange from the payment account of the cardholder to the merchant and receiving the assigned randomized transaction identifier and a randomized authentication identifier associated with the randomized transaction identifier from a payment association, the payment association determining whether the request for the authorization of the exchange is valid.

Abstract: Authentication for payment transaction includes receiving, by a point-of-sale (POS) terminal, an indication that a payment account of a cardholder is associated with a mobile device and receiving a second indication of physical possession of a payment card by a merchant. The authentication includes receiving a purchase request for an authorization of exchange from the payment account of the cardholder to the merchant and assigning a transaction identifier to the request for the authorization of the exchange. The authentication includes transmitting the request for authorization of the exchange from the cardholder payment account to the merchant and the transaction identifier. The authentication includes receiving an indication that an authentication identifier is associated with the transaction identifier. The authentication includes receiving a copy of the authentication identifier, facilitated by the cardholder.

Abstract: Authentication includes determining that a cardholder payment account is associated with a mobile device. Authentication includes receiving an indication of physical possession of a payment card. Authentication includes receiving a purchase request for an authorization of an exchange of funds from the cardholder account to the merchant. Authentication includes receiving a randomized transaction identifier to the request for the authorization of the exchange. Authentication includes transmitting to the mobile device, information associated with the request. Authentication includes transmitting to the mobile device, a request for confirmation of the authorization from the cardholder from the account of the cardholder to the merchant. Authentication includes receiving an indication, facilitated by the cardholder, that the exchange is authorized. Authentication includes authorizing the exchange of from the payment account of the cardholder to the merchant.

Abstract: Authentication includes receiving an indication of physical possession of a payment card by a merchant and receiving a purchase request for an authorization of an exchange from the payment account of the cardholder to the merchant. Authentication includes assigning a randomized transaction identifier to the request for the authorization of the exchange. The method also includes transmitting the request for the authorization of the exchange from the payment account of the cardholder to the merchant and receiving the assigned randomized transaction identifier and a randomized authentication identifier associated with the randomized transaction identifier from a payment association, the payment association determining whether the request for the authorization of the exchange is valid.

Abstract: Authentication includes receiving an indication of physical possession of a payment card by a merchant and receiving a purchase request for an authorization of an exchange from the payment account of the cardholder to the merchant. Authentication includes assigning a randomized transaction identifier to the request for the authorization of the exchange. The method also includes transmitting the request for the authorization of the exchange from the payment account of the cardholder to the merchant and receiving the assigned randomized transaction identifier and a randomized authentication identifier associated with the randomized transaction identifier from a payment association, the payment association determining whether the request for the authorization of the exchange is valid.

Abstract: Authentication for payment transaction includes receiving, by a point-of-sale (POS) terminal, an indication that a payment account of a cardholder is associated with a mobile device and receiving a second indication of physical possession of a payment card by a merchant. The authentication includes receiving a purchase request for an authorization of exchange from the payment account of the cardholder to the merchant and assigning a transaction identifier to the request for the authorization of the exchange. The authentication includes transmitting the request for authorization of the exchange from the cardholder payment account to the merchant and the transaction identifier. The authentication includes receiving an indication that an authentication identifier is associated with the transaction identifier. The authentication includes receiving a copy of the authentication identifier, facilitated by the cardholder.

Abstract: Authentication includes determining that a cardholder payment account is associated with a mobile device. Authentication includes receiving an indication of physical possession of a payment card. Authentication includes receiving a purchase request for an authorization of an exchange of funds from the cardholder account to the merchant. Authentication includes receiving a randomized transaction identifier to the request for the authorization of the exchange. Authentication includes transmitting to the mobile device, information associated with the request. Authentication includes transmitting to the mobile device, a request for confirmation of the authorization from the cardholder from the account of the cardholder to the merchant. Authentication includes receiving an indication, facilitated by the cardholder, that the exchange is authorized. Authentication includes authorizing the exchange of from the payment account of the cardholder to the merchant.

Abstract: Authentication includes receiving an indication of physical possession of a payment card by a merchant and receiving a purchase request for an authorization of an exchange from the payment account of the cardholder to the merchant. Authentication includes assigning a randomized transaction identifier to the request for the authorization of the exchange. The method also includes transmitting the request for the authorization of the exchange from the payment account of the cardholder to the merchant and receiving the assigned randomized transaction identifier and a randomized authentication identifier associated with the randomized transaction identifier from a payment association, the payment association determining whether the request for the authorization of the exchange is valid.

Abstract: Authentication for payment transaction includes receiving, by a point-of-sale (POS) terminal, an indication that a payment account of a cardholder is associated with a mobile device and receiving a second indication of physical possession of a payment card by a merchant. The authentication includes receiving a purchase request for an authorization of exchange from the payment account of the cardholder to the merchant and assigning a transaction identifier to the request for the authorization of the exchange. The authentication includes transmitting the request for authorization of the exchange from the cardholder payment account to the merchant and the transaction identifier. The authentication includes receiving an indication that an authentication identifier is associated with the transaction identifier. The authentication includes receiving a copy of the authentication identifier, facilitated by the cardholder.

Abstract: Authentication for payment transaction includes receiving, by a point-of-sale (POS) terminal, an indication that a payment account of a cardholder is associated with a mobile device and receiving a second indication of physical possession of a payment card by a merchant. The authentication includes receiving a purchase request for an authorization of exchange from the payment account of the cardholder to the merchant and assigning a transaction identifier to the request for the authorization of the exchange. The authentication includes transmitting the request for authorization of the exchange from the cardholder payment account to the merchant and the transaction identifier. The authentication includes receiving an indication that an authentication identifier is associated with the transaction identifier. The authentication includes receiving a copy of the authentication identifier, facilitated by the cardholder.

Abstract: Authentication includes receiving an indication of physical possession of a payment card by a merchant and receiving a purchase request for an authorization of an exchange from the payment account of the cardholder to the merchant. Authentication includes assigning a randomized transaction identifier to the request for the authorization of the exchange. The method also includes transmitting the request for the authorization of the exchange from the payment account of the cardholder to the merchant and receiving the assigned randomized transaction identifier and a randomized authentication identifier associated with the randomized transaction identifier from a payment association, the payment association determining whether the request for the authorization of the exchange is valid.

Abstract: Authentication includes receiving an indication of physical possession of a payment card by a merchant and receiving a purchase request for an authorization of an exchange from the payment account of the cardholder to the merchant. Authentication includes assigning a randomized transaction identifier to the request for the authorization of the exchange. The method also includes transmitting the request for the authorization of the exchange from the payment account of the cardholder to the merchant and receiving the assigned randomized transaction identifier and a randomized authentication identifier associated with the randomized transaction identifier from a payment association, the payment association determining whether the request for the authorization of the exchange is valid.

Abstract: Authentication includes determining that a cardholder payment account is associated with a mobile device. Authentication includes receiving an indication of physical possession of a payment card. Authentication includes receiving a purchase request for an authorization of an exchange of funds from the cardholder account to the merchant. Authentication includes receiving a randomized transaction identifier to the request for the authorization of the exchange. Authentication includes transmitting to the mobile device, information associated with the request. Authentication includes transmitting to the mobile device, a request for confirmation of the authorization from the cardholder from the account of the cardholder to the merchant. Authentication includes receiving an indication, facilitated by the cardholder, that the exchange is authorized. Authentication includes authorizing the exchange of from the payment account of the cardholder to the merchant.

Abstract: Authentication includes determining that a cardholder payment account is associated with a mobile device. Authentication includes receiving an indication of physical possession of a payment card. Authentication includes receiving a purchase request for an authorization of an exchange of funds from the cardholder account to the merchant. Authentication includes receiving a randomized transaction identifier to the request for the authorization of the exchange. Authentication includes transmitting to the mobile device, information associated with the request. Authentication includes transmitting to the mobile device, a request for confirmation of the authorization from the cardholder from the account of the cardholder to the merchant. Authentication includes receiving an indication, facilitated by the cardholder, that the exchange is authorized. Authentication includes authorizing the exchange of from the payment account of the cardholder to the merchant.

Abstract: The present invention involves a BICMOS logic switching circuit biased between upper and lower supply voltages. This circuit includes a CMOS logic circuit driven by a plurality of logic input signals. This logic switching circuit also has a driving circuit coupled to the CMOS logic switching circuit and includes an output node, a first bipolar transistor, and a second bipolar transistor. The first bipolar transistor is coupled in series with the second bipolar transistor with the output node therebetween for providing an output signal on the output node, wherein the second bipolar transistor has a base directly coupled to a field effect transistor switch coupled to the upper supply voltage. The field effect transistor switch is controlled by logic input signals.