# Patent

## Title
Method and system for enabling merchants to share tokens

## Abstract

One embodiment of the present disclosure provides a system and associated processes for sharing cardholder data (CHD) between a merchant that utilizes tokenization and a second merchant that may or may not utilize tokenization. In one embodiment, the merchant, or an employee of the merchant, can use the system and associated processes to reacquire CHD from a tokenization provider system. In one embodiment, the merchant identifies to the tokenization provider system a desire to share CHD, which is associated with a token, with a second merchant. The merchant and/or the tokenization provider system can then invite the second merchant to register with the tokenization provider system. Once registered with the tokenization provider system, the second merchant can access any CHD that the merchant associated with the second merchant.

## Background
RELATED APPLICATION
This application claims the benefit of priority under 35 U.S.C. §119(e) of U.S. Provisional Patent Application No. 61/476,194, filed on Apr. 15, 2011, and entitled “METHOD AND SYSTEM FOR SHARING TOKENS,” the disclosure of which is hereby incorporated by reference in its entirety.


BACKGROUND
Tokenization is a concept used in credit, debit, and gift card processing systems to avoid storing cardholder data (CHD) such as credit and debit card numbers, pin numbers, expiration dates, card security codes, and the like at a merchant's location. For example, when a merchant initially accepts a credit card at a point-of-sale (POS) system, the CHD is encrypted and sent to a remote gateway system. The gateway system requests authorization from a credit card processor, which obtains authorization from a bank that issued the card. The gateway system receives the authorization from the credit card processor and provides a token to the merchant for storage along with the authorization.
The token can be a globally unique, randomized, alphanumeric replacement for the CHD. The merchant's POS system stores the token instead of storing the CHD. If the merchant needs to reauthorize a customer (for example, to add a tip at a restaurant), the merchant sends the token to the gateway system, which then sends the actual CHD to the processor. With tokenization, thieves cannot steal CHD from merchants because the tokens are stored in place of the actual CHD.
SUMMARY
Embodiments of the present disclosure relate to a system for sharing cardholder data (CHD). In some embodiments, the system includes a tokenization system. The tokenization system may be configured to receive CHD of a customer from a first merchant. The tokenization system can associate a token with the CHD in physical computer storage to thereby enable the token to be used to represent the CHD. Further, the tokenization system may be configured to electronically transmit the token to the first merchant so as to enable the first merchant to perform a first transaction for the customer without having to store the CHD. In some implementations, the system may include a token-access granting system that includes computer hardware. The token-access granting system may be configured to receive an indication from the first merchant that one or more of the token and the CHD are to be shared with a second merchant. In response to receiving the indication, the token-access granting system may be configured to authorize the second merchant to access one or more of the token and the CHD, thereby enabling the second merchant to perform a second transaction for the customer.
Additional embodiments of the present disclosure relate to a method for sharing a token associated with cardholder data (CHD) in a tokenization provider system to enable the sharing of cardholder data between users. In certain embodiments, the method may be performed by a token access system implemented in a computing system that includes one or more processors. The method may include generating a first set of words and associating the first set of words with a token. The token may be associated with CHD in a tokenization provider system. The method may further include associating, in computer memory of the token access system, the first set of words with a user. In addition, the method may include providing access to the first set of words to the user. The method may also include receiving user authentication information associated with the user and receiving a second set of words from the user. In some implementations, the method includes determining whether the user is authorized to use the token by at least authenticating the user based, at least in part, on the user authentication information, and determining whether the second set of words matches the first set of words. In response to determining that the user is authorized to use the token, the method may include providing the user with electronic access to the token.
Some embodiments of the present disclosure relate to a system for sharing cardholder data (CHD). This system may include a token acquisition system configured to provide CHD of a customer to a tokenization provider system. Further, the token acquisition system may be configured to receive electronically a token associated with the CHD so as to enable a first merchant associated with the token acquisition system to perform a first transaction for the customer without having to store the CHD. In some implementations, the system includes a token sharing system configured to provide to the tokenization provider system an indication that one or more of the token and the CHD are to be shared with a second merchant, thereby enabling the second merchant to perform a second transaction for the customer.



BRIEF DESCRIPTION OF THE DRAWINGS
Throughout the drawings, reference numbers are re-used to indicate correspondence between referenced elements. The drawings are provided to illustrate embodiments of the inventive subject matter described herein and not to limit the scope thereof.
FIG. 1 illustrates an example embodiment of a token-sharing environment.
FIG. 2 illustrates a flow diagram for an example embodiment of a token provisioning process.
FIG. 3 illustrates a flow diagram for an example embodiment of a process for accessing cardholder data.
FIG. 4 illustrates a flow diagram for a second example embodiment of a token provisioning process.
FIG. 5 illustrates a flow diagram for a second example embodiment of a process for accessing cardholder data.
FIG. 6 illustrates a flow diagram for an example flow of information using a tokenization provider system.
FIG. 7 illustrates an example embodiment of a user login interface.
FIG. 8 illustrates an example embodiment of a user registration interface.
FIG. 9 illustrates an example embodiment of a merchant selection interface.
FIG. 10 illustrates an example embodiment of a populated merchant selection interface.
FIG. 11 illustrates an example embodiment of a CHD access interface.
FIG. 12 illustrates an example of a CHD provisioning interface.



DETAILED DESCRIPTION OF SPECIFIC EMBODIMENTS
Introduction
The security advantages of tokenization sometimes come at the expense of flexibility. Because a merchant that uses tokenization stores a token instead of cardholder data (CHD), the merchant cannot share the CHD with a second merchant. This inability to share CHD can affect the merchant's ability to fully service his or her customers. For example, many quality hotels will make restaurant reservations, order flowers, reserve theatre tickets, and provide a number of additional services for guests that help differentiate these quality hotels from lesser quality hotels. However, without access to CHD, it becomes more difficult if not impossible to provide guests with these aforementioned services.
Further, the lack of access to CHD by merchants that use third-party services, which take advantage of tokenization, can affect the ability of some merchants to charge for cancelled reservations. For example, a golf course may work with a vacation reservation company to sell tee-times to vacationers. If a vacationer fails to show up without properly cancelling his or her reservation, the golf course may wish to charge the vacationer a cancellation fee. However, if the vacation reservation company utilizes a tokenization service, the vacation reservation company will be unable to provide the golf course with the CHD.
Moreover, there are instances where a merchant may desire to reacquire CHD. For example, the merchant may want to process a transaction that includes interacting with a payment or credit card processor that is not supported by the tokenization gateway, which handles transactions on behalf of merchants that opt to use tokenization.
One embodiment of the present disclosure provides a system and associated processes for sharing CHD between a merchant that uses tokenization and a second merchant that may or may not use tokenization. In one embodiment, the merchant, or an employee of the merchant, can use the system and associated processes to reacquire CHD from a tokenization provider system. In one embodiment, the merchant identifies to the tokenization provider system a desire to share CHD, which is associated with a token, with a second merchant. If the second merchant is not registered with the tokenization provider system, the merchant and/or the tokenization provider system can invite the second merchant to register with the tokenization provider system. Once registered with the tokenization provider system, the second merchant can access any CHD that the initial merchant associates with the second merchant.
In one embodiment, the second merchant identifies the token associated with the CHD to the tokenization provider system. If the merchant has given the second merchant access to the token, then the tokenization provider system can provide the second merchant with the CHD. In one embodiment, providing the CHD to the second merchant comprises the tokenization provider system performing a transaction using the CHD for the second merchant. Advantageously, in some embodiments, the tokenization provider performing the transaction for the second merchant maintains the security advantages gained from tokenization because the second merchant can use the CHD without the second merchant viewing the CHD and without a copy of the CHD being sent to the second merchant's location. In one embodiment, once the second merchant acquires the CHD, the second merchant can use the tokenization provider system, or the second merchant's tokenization provider system, to obtain a new token associated with the CHD and the second merchant. The second merchant can then take advantage of tokenization and avoid storing the CHD at the second merchant's location.
In one embodiment, providing the second merchant with access to the token and/or the CHD associated with the token comprises providing the second merchant with an authorization factor. This authorization factor is associated with one or more of the token, the CHD, and the second merchant. In one embodiment, to access the token and/or CHD, the tokenization provider system can request that the second merchant present the authorization factor as part of the user authentication process. Advantageously, in some embodiments, use of the authorization factor prevents automated systems from accessing the token and/or CHD. Further, in some embodiments, use of the authorization factor increases the security of the CHD because, in certain embodiments, the CHD is protected by two levels of obscurity. A user attempting to access the CHD may be required to authenticate with the tokenization provider system and provide the authorization factor. Further, the authorization factor can be associated with the CHD and the user thereby preventing a user who is authorized to access the tokenization provider system, but not the CHD from accessing the CHD.
Many variations of these example systems and associated processes are described below in more detail with reference to the drawings. Further, in some cases, one or more of the various embodiments and systems can be combined into fewer embodiments or systems or split into multiple embodiments or systems.
Example Token-Sharing Environment
FIG. 1 illustrates an example embodiment of a token-sharing environment 100. The token-sharing environment 100 can comprise a tokenization provider system 102, a merchant environment 104, and a third-party merchant environment 106.
The tokenization provider system 102 is associated with a tokenization provider (not shown) and can generally include any system capable of creating a token associated with CHD, storing the token and the CHD, and providing the token to a user (e.g. a merchant 142) of the tokenization provider system 102. Further, the tokenization provider system 102 can generally include any system capable of performing a payment card transaction on behalf of the merchant 142 without the merchant 142 having or maintaining a copy of the CHD. This CHD can include any information associated with a customer of the merchant environment 104 and the customer's payment card that is necessary to process a payment transaction, but which the merchant 142 does not wish to store at the merchant environment 104 due to, for example, security-related expenses or concerns. Further, the payment card can be any type of card that can facilitate completing the payment transaction. For example, the payment card can be a credit card, debit card, or gift card. One example of such a tokenization provider system is the Dollars On The Net® solution from Shift4® Corporation of Las Vegas, Nev.
The merchant environment 104 can generally include any product or service provider that accepts credit cards, or other types of payment cards, for payment and utilizes the tokenization provider system 102 for payment processing. For example, the merchant environment 104 can be a hotel, an electronics store, a restaurant, an online ecommerce website, or a healthcare provider, to name a few. Further, the merchant environment 104 may be associated with an organization, or merchant organization, that is affiliated with or owns one or more merchant environments. For example, assuming the merchant environment represents a hotel, the organization may be associated with a number of hotel locations and/or hotel chains.
Generally, the merchant organization is a different organization than the tokenization provider. However, in some embodiments, the merchant organization may be the same organization as the tokenization provider that is associated with the tokenization provider system 102. For example, the tokenization provider system 102 may represent, at least in part, the corporate headquarters for the merchant organization or it may represent a central processing facility for processing payment transactions for one or more locations of the merchant environment 104. Further, the merchant environment 104 may represent a store location owned by the merchant organization, or the merchant environment 104 may represent a franchisee.
In one embodiment, the merchant environment 104 includes a merchant 142 and an administrator 148. The merchant 142 can represent any individual (e.g. an employee) affiliated with the merchant environment 104 who may or may not have administrative access to an account associated with the tokenization provider system 102. The admin 148 can represent any individual affiliated with the merchant environment 104 who has administrative access to an account associated with the tokenization provider system 102. For example, the admin 148 can be a manager or an owner of the merchant environment 104.
The third-party merchant environment 106 can generally include any product or service provider that accepts credit cards, or other types of payment cards, for payment and may or may not utilize the tokenization provider system 102 for payment processing. For example, the third-party merchant environment 106 can be a flower shop, a hotel, a theatre, another ecommerce website, or a franchisee of the merchant environment 104. In one embodiment, the third-party merchant environment 106 may utilize a tokenization provider system that is not affiliated with the tokenization provider system 102. In one embodiment, the third-party merchant environment 106 includes a third-party merchant 162. The third-party merchant 162 can represent any individual associated with the third-party merchant environment 106.
In one embodiment, the merchant 142 can obtain CHD from a customer (not shown) during a first or initial transaction. When the merchant 142 provides the CHD to the POS 144, the POS 144 can provide the CHD to a token access system 122, which is associated with the tokenization provider system 102. In turn, the token access system 122 can provide the POS 144 with a token associated with the CHD. This token can be generated by the token access system 122 or a token generation system (not shown) that is associated with the tokenization provider system 102. The POS 144 can then delete any CHD and can store the token at the token repository 152, which is part of the merchant repository system 150. Further, the POS 144 can associate the token with a customer profile associated with the customer and stored at the customer profile repository 154, which is part of the merchant repository system 150. The token access system 122 can store the CHD and the token, as well as the relationship between the token and the CHD, at the token/CHD relationship repository 132, which is part of the tokenization provider repository system 130.
The POS 144 can generally represent any point-of-sale system that can process payment card transactions by communicating with the credit card processors 172, or by communicating with the tokenization provider system 102, which communicates with the credit card processors 172 for the POS 144. The tokenization provider system 102 may communicate with the credit card processors 172 using, for example, the gateway 126. In one embodiment, the POS 144 communicates directly with the tokenization provider system 102 via a private secure connection. Alternatively, the POS 144 can communicate with the tokenization provider system 102 via the network 170. The network 170 can include any type of wired or wireless network. For example, the network 170 can be a LAN, WAN, or the Internet, to name a few. The credit card processors 172 and the credit card processor 174 can generally include any payment card processing system or service.
The token access system 122 can generally include any system that can generate tokens associated with CHD and provide the tokens to a merchant environment 104. Further, the token access system 122 can include any system that can regulate access to the tokens, and CHD associated with the tokens.
The merchant repository system 150 can generally include any repository, database, or information storage system that can store information associated with the merchant environment 104. In one embodiment, the merchant repository system 150 comprises the token repository 152 and the customer profile repository 154. The token repository 152 can generally include any system capable of storing tokens associated with CHD. In one embodiment, the token repository 152 stores token identifiers associated with tokens stored at the tokenization provider system 102. The customer profile repository 154 can generally include any information associated with customers of the merchant environment 104 that the merchant environment 104 may store. For example, the customer profile repository may include the customer's identity, the customer's preferences (e.g. red flowers or a corner hotel room), and the customer's purchase history, to name a few. In one embodiment, one or more of the token repository 152 and the customer profile repository 154 may store information linking an entry in the customer profile repository 154 with an entry in the token repository 152 thereby associating a token with a customer. In one embodiment, the token repository 152 and the customer profile repository 154 can be combined or divided further.
The tokenization provider repository system 130 can generally include any repository, database, or information storage system that can store information associated with the tokenization provider system 102. In one embodiment, the tokenization provider repository system 130 comprises a token/CHD relationship repository 132, a token access repository 134, and a CHD access log repository 136. The token/CHD relationship repository 132 can generally include any system that can store CHD and tokens, as well as the relationship between the tokens and the CHD. The token access repository 134 can generally include any system that can store information associated with identifying who can access the tokens and CHD maintained by the tokenization provider system 102. This information can include user identification information, user authentication information, and user/token relationship information, to name a few. The CHD access log repository 136 can generally include any system that can store information associated with token and CHD access by users of the tokenization provider system 102. These users can include both users who use the tokenization provider system 102 for tokenization services (e.g. the merchant 142) and users who access the tokenization provider system 102 to access shared tokens or CHD (e.g. the third-party merchant 162). In one embodiment, the token/CHD relationship repository 132, the token access repository 134, and the CHD access log repository 136 can be combined or divided further.
In one embodiment, the merchant 142 can provide the third-party merchant 162 with access to the CHD. Providing the third-party merchant 162 with access to the CHD comprises the merchant 142 providing the third-party merchant 162 with access to the token associated with the CHD. To provide the third-party merchant 162 with access to the CHD, the merchant 142 can send the token or token identifier and a merchant identifier associated with the third-party merchant 162 to the token access system 122. Further, the token access system 122 provides the token or a token-identifier to the third-party merchant 162 enabling the third-party merchant 162 to access the CHD associated with the token at the tokenization provider system 102.
In one embodiment, the merchant 142 provides the token or the token-identifier to the third-party merchant 162 using, for example, the computing system 146 thereby enabling the third-party merchant 162 to access CHD associated with the token at the tokenization provider system 102.
In one embodiment, access to the CHD is generally on a limited basis. For example, using the token, the third-party merchant 162 may only be able to access the CHD once, a small number of times, or for a predefined period (such as 15-minutes). However, access to the CHD is not so limited in other embodiments.
In one embodiment, the merchant 142 can remove access to the CHD from the third-party merchant 162 by requesting that the token access system 122 disassociate the token from the third-party merchant 162.
In some embodiments, the merchant 142 provides token access to one or more users that have been pre-identified to the tokenization provider system 102 by the admin 148 using, for example, the computing system 146. Similarly, in some embodiments, the admin 148 can remove access to the CHD from the one or more pre-identified users. In one embodiment, the pre-identified users can be third-parties (e.g. the third-party merchant 162) and/or users associated with the merchant environment 104 (e.g. the merchant 142).
In some embodiments, although the third-party merchant 162 may or may not be a customer of the tokenization provider, to access the CHD, the third-party merchant 162 registers with the token access system 122. Registration with the token access system 122 enables the token-access system 122 to associate the token with the third-party merchant 162. Further, the registration enables the tokenization provider to optionally verify the identity of the third-party merchant 162 and to determine if the third-party merchant 162 is trustworthy based on publicly available information or any other information source available to the tokenization provider.
In one embodiment, the third-party merchant 162 accesses the token access system 122 via a computing system 164 or a POS 166. The third-party merchant 162 authenticates with the token access system 122 and can then request the CHD associated with a token by providing a copy of the token or a token identifier associated with the token to a CHD access system 124. If the third-party merchant 162 has been pre-authorized by the admin 148 to access the CHD, the CHD access system 124 can provide the third-party merchant 162 with access to the CHD. Once the third-party merchant 162 has gained access to the CHD, the third-party merchant 162 can process a transaction for the customer via the POS 166 using the CHD. Alternatively, if the third-party merchant 162 is a customer of the tokenization provider, the third-party merchant 162 can use the gateway 126 to process the transaction. In one embodiment, gaining access to the CHD enables the third-party merchant 162 to view the CHD. Alternatively, in some embodiments, gaining access to the CHD enables the third-party merchant 162 to perform a transaction with or without viewing the CHD.
In one embodiment, the CHD access system 124 causes the CHD to be displayed to the user via one or more of the POS 166 and the computing system 164.
The CHD access system 124 can generally include any system that can provide access to CHD associated with a token. In one embodiment, the CHD access system 124 authenticates a user and determines whether the user is authorized to access the CHD before providing access to CHD associated with a token.
The token access system 122, or the CHD access system 124, can log each access of the CHD or token at the CHD access log repository 136, which is part of the tokenization provider repository system 130. Advantageously, in some embodiments, by logging each access of the CHD or token, it can be determined if a potential unauthorized use of the CHD is attributable to the merchant 142, the third-party merchant 162, or some unrelated party.
The POS 166 can generally represent any point-of-sale system that can process payment card transactions by communicating with the credit card processor 174. In one embodiment, the POS 166 communicates directly with the credit card processor 174. Alternatively, the POS 166 communicates with the credit card processor 174 via the network 170. The POS 166 may also communicate with the credit card processor 174 or the credit card processors 172 using the tokenization provider system 102. Generally, this communication may occur if the third-party merchant environment 106 is also a customer of the tokenization provider system 102. However, in some instances, the POS 166 may use the tokenization provider system 102 to communicate with the credit card processors without the third-party merchant environment 106 being a customer of the tokenization provider system 102. For example, in some cases the third-party merchant 106 may be authorized to use the tokenization provider system 102 when initiating transactions that use CHD associated with a token provided by a party that is a customer of the tokenization provider system 102, such as the merchant environment 104. In one embodiment, the POS 166 and the POS 144 can be similarly configured.
The gateway 126 can generally include any system that can process transactions by providing CHD and transaction information to the credit card processors 172 either directly or via the network 170 on behalf of the merchant environment 104.
The computing systems 146 and 164 can generally include any computing device(s), such as desktops, laptops, and wireless mobile devices (e.g. smart phones, PDAs, tablets, or the like), to name a few. In one embodiment, one or more of the merchant environment 104 and the third-party merchant environment 106 is associated with an ecommerce website. In one embodiment, the computing systems 146 and 164 can also include video game platforms, television set-top boxes, televisions (e.g., internet TVs), and computerized appliances, to name a few. In one embodiment, the computing systems 146 and 164 can include any computing device that can interact with the tokenization provider system 102.
In one embodiment, providing access to a token and the CHD associated with the token comprises associating an authorization factor with the token. For example, to provide the third-party merchant 162 with access to the CHD, the merchant 142 can send the token and a merchant identifier associated with the third-party merchant 162 to the token access system 122. The token access system 122 can use the authorization factor generator 128 to generate an authorization factor. The authorization factor can be associated with the token and the merchant identifier at the token access repository 134. The token access system 122 can provide the authorization factor along with the token or token-identifier to the third-party merchant 162 enabling the third-party merchant 162 to access the CHD associated with the token at the tokenization provider system 102. In one embodiment, the merchant 142 provides the authorization factor to the third-party merchant 162.
The authorization factor generator 128 can generally include any system capable of generating or otherwise accessing an authorization factor. The authorization factor can include any factor that can be used to help authenticate the third-party merchant 162 and to prevent automated systems, possibly associated with malicious users, from attempting to obtain CHD access. For example, the authorization factor can comprise a set of one or more random or pseudo-random words, numbers, symbols, images, sounds, or a combination of the same. In some embodiments, the authorization factor can be non-random and may be associated with a defined algorithm. Further, in some embodiments, the authorization factor can be associated with a theme. For example, the authorization factor can be a set of four random color words, car images, or rock music sound bites. In some embodiments, the authorization factor can be a security question.
In one embodiment, to access CHD associated with a token, the third-party merchant 162 authenticates with the tokenization provider system 102. The third-party merchant 162 also provides both a token or token identifier and an authorization factor. If the authorization factor matches an authorization factor associated with the token and the token is associated with the third-party merchant 162, then the CHD access system 124 can provide the third-party merchant 162 with access to the CHD associated with the token. Thus, in some embodiments, the third-party merchant 162 must be registered with the tokenization provider system 102, and have been granted access to the CHD by the merchant 142.
In one embodiment, the admin 148 identifies the merchants, or users, to the tokenization provider system 102 that the merchant 142 can potentially provide token access. In one embodiment, the admin 148 identifies to the tokenization provider system 102 the employees of the merchant environment 104 that can share token access with other merchants, or users.
In one embodiment, the authorization factor is presented to the third-party merchant 162 via a human-detection test, such as a captcha, reverse Turing test, or other challenge-response test. In one embodiment, the authorization factor is presented to the third-party merchant via a RSA hardware authenticator. In one embodiment, after providing the authorization factor, a phone-verification system (not shown) associated with the tokenization provider system 102 can contact the third-party merchant 162 to request verification that the third-party merchant 162 is attempting to access the CHD associated with a token. In some embodiments, use of the phone-verification system can advantageously prevent attempts at automated CHD access by malicious programs.
In one embodiment, one or more of the token access system 122, the CHD access system 124, and the authorization factor generator 128 can be located at the merchant environment 104.
As one example, non-limiting, use-case of an embodiment of the present disclosure, assume that the merchant environment 104 represents an electronics store and the third-party merchant environment 106 represents an extended warranty provider. The extended warranty provider is contracted with the merchant environment 104 to provide extended warranties to customers of the merchant environment 104 who opt to purchase an extended warranty with their electronic purchase. A customer who is attempting to purchase a television may provide CHD to the merchant environment 104. The merchant environment 104 may then provide the CHD to the tokenization provider system 102. The tokenization provider system 102 processes the transaction and returns a token associated with the CHD to the merchant environment 104 which stores the token and associates the token with the customer. Now, assume the customer decides to purchase the extended warranty for the television. The merchant environment 104 can authorize the third-party merchant environment 106 to use the token. The third-party merchant environment 106 can then access the tokenization provider system 102 and request the CHD associated with the token, thereby enabling the third-party merchant 106 to process the extended warranty transaction for the customer. Alternatively, the third-party merchant environment 106 can request that the tokenization provider system 102 process the extended warranty transaction using the CHD associated with the token.
Example Token Provisioning Process
FIG. 2 illustrates a flow diagram for an example embodiment of a token provisioning process 200. The process 200 can be implemented by any system that can generate and associate a token with CHD on behalf of a merchant 142 and can provide a second merchant, such as the third-party merchant 162, with access to the token. For example, the process 200, in whole or in part, can be implemented by one or more of the token access system 122, the CHD access system 124, and the gateway 126. In one embodiment, the second merchant can be a merchant that is associated with the merchant 142, such as an employee of the merchant 142. Although any number of systems, in whole or in part, can implement the process 200, to simplify discussion, the process 200 will be described as being generally implemented by the token access system 122.
The process 200 begins at block 202, where, for example, the token access system 122 receives CHD from the merchant 142. At block 204, the token access system 122 generates a token. This token can be any piece of random or pseudo-random globally unique data that can be stored by the merchant 142 in place of the CHD. In one embodiment, the token can include alphanumeric characters, symbols, pictures, etc. Generally, there exists no correlation between the token value or contents and the contents of the CHD thereby making it impossible to determine the CHD from the token itself. However, in some embodiments, one or more pieces of the CHD can be used to facilitate generating the token. In one embodiment, the token differs from an encrypted version of the CHD and thus, cannot be manipulated to obtain the CHD. In one embodiment, the token can be an encrypted form of the CHD or a combination of encrypted CHD and false non-CHD.
At block 206, the token access system 122 associates the token with the CHD. In some embodiments, the relationship between the token and the CHD is stored at the token/CHD relationship repository 132. In some embodiments, the token access system 122 may also associate the token with the merchant 142. This relationship may also optionally be stored at the token/CHD relationship repository 132. In some cases, there may exist a number of tokens and sets of CHD data. For example, there may be one, a hundred, a thousand, ten-thousand, a million, or more tokens and sets of CHD data. Thus, the token access system 122, for example, may maintain relationships between a number of tokens and sets of CHD data, including, one, a hundred, a thousand, ten-thousand, etc. Generally, one token is associated with one set of CHD data. However, in some embodiments, a token may be associated with multiple sets of CHD data and/or a set of CHD data may be associated with multiple tokens. For example, multiple merchants may have obtained a set of CHD from a customer, and as a result, if more than one of the merchants uses tokenization, it is possible for multiple tokens to be associated with one set of CHD.
At block 208, the token access system 122 provides the token to the merchant 142. In one embodiment, providing the token to the merchant 142 enables the merchant to perform transactions without the CHD. The merchant 142 can identify the token and provide transaction details, for example, to the gateway 126 or the token access system 122. The gateway 126 can then process the transaction on behalf of the merchant 142. In some embodiments, the merchant 142 can store the token at the token repository 152. Advantageously, in some embodiments, once the CHD has initially been provided to the token access system 122, the merchant 142 can perform a transaction using the CHD without directly accessing, viewing, or maintaining a copy of the CHD at the merchant environment 104.
At block 210, the token access system 122 receives a request to associate the token with a second merchant, such as the third-party merchant 162. In some embodiments, the request comprises receiving one or more of an identifier, contact information, and account information associated with the third-party merchant 162. Generally, this information does not include information that the third-party merchant 162 uses to access the tokenization provider system 102. For example, the identifier or account information may include a public identifier that the third-party merchant 162 can share with merchants who wish to grant the third-party merchant 162 with token access, but generally the public identifier is distinct from an identifier the third-party merchant 162 uses to identify itself to the tokenization provider system 162. However, in some embodiments, the public identifier and the login identifier may be the same. Further, in some embodiments, the request comprises receiving the identity of the token. Alternatively, the request comprises receiving a copy of the token.
The token access system 122 authorizes the second merchant (e.g. the third-party merchant 162) to access the token at block 212. In some embodiments, authorizing access to the token comprises authorizing access to the CHD. In some embodiments, block 212 can also comprise informing the second merchant that the second merchant, or an account associated with the second merchant, is authorized to access the token and/or CHD. In some embodiments, informing the second merchant of the authorization can comprise emailing, texting, leaving a voice message, or providing an alert via the POS 166, the computing system 164, or an account page associated with the third-party merchant 162 at the tokenization provider system 102. In some embodiments, authorizing the second merchant to access the token comprises providing a copy of the token and/or an identifier associated with the token to the second merchant. In some embodiments, the token access system 122 stores the relationship between the second merchant and the token and/or CHD at the token access repository 134.
Example Process for Accessing Cardholder Data
FIG. 3 illustrates a flow diagram for an example embodiment of a process 300 for accessing cardholder data. The process 300 can be implemented by any system that can provide a second merchant, such as the third-party merchant 162, with CHD associated with a token, which was created in response to a first merchant, such as the merchant 142, providing the CHD to the system or a related system. For example, the process 300, in whole or in part, can be implemented by one or more of the token access system 122, the CHD access system 124, and the gateway 126. In one embodiment, the second merchant can be a merchant that is associated with the merchant 142, such as an employee of the merchant 142. In one embodiment, the process 300 can be used by the merchant 142, who initially provided the CHD, or an employee of the merchant 142, to retrieve the CHD. Although any number of systems, in whole or in part, can implement the process 300, to simplify discussion, the process 300 will be described as being generally implemented by the CHD access system 124.
The process 300 begins at block 302, where, for example, the CHD access system 124 receives user authentication information associated with, for example, the third-party merchant 162. This user authentication information can generally include any information that can be used to authenticate the third-party merchant 162. For example, the user authentication information can include: a user name, a password, a RSA token code (e.g. a code produced by an RSA SecurIDTM hardware authenticator), and the response to a challenge-response test, such as a human-detection test response (e.g. a captcha response) or an answer to a security question.
At decision block 304, the CHD access system 124 determines, based at least in part on the user authentication information, if the third-party merchant 162 is authorized to access the tokenization provider system 102, or any system associated with the tokenization provider system 102. If the third-party merchant 162 is not authorized to use the tokenization provider system 102, the CHD access system rejects the third-party merchant 162 at block 306. In one embodiment, rejecting the third-party merchant 162 can comprise initiating a registration process that enables the third-party merchant 162 to register with the tokenization provider system 102. In one embodiment, rejecting the third-party merchant 162 can comprise providing an error message to the third-party merchant 162.
If the third-party merchant 162 is authorized to access the tokenization provider system 102, the CHD access system 124 receives a token from the third-party merchant 162 at block 308. Alternatively, at block 308, the CHD access system 124 accesses the token pre-associated with the third-party merchant 162 by the merchant 142 from the token access repository 134. In one embodiment, receiving the token comprises receiving a token identifier associated with the token. In one embodiment, receiving the token includes receiving a request to access CHD associated with the token.
At decision block 310, the CHD access system 124 determines if the third-party merchant 162 is authorized to use the token. In one embodiment, to determine if the third-party merchant 162 is authorized to use the token, the CHD access system 124 determines if the third-party merchant 162 is associated with the token at the token access repository 134.
If the third-party merchant 162 is not authorized to use the token, the CHD access system 124 rejects the third-party merchant's 162 request to access the CHD associated with the token at block 312. In one embodiment, rejecting the third-party merchant's 162 request can include logging the third-party merchant's 162 request at the CHD access log repository 136. Further, in one embodiment, rejecting the third-party merchant's 162 request can include informing the merchant 142 of the third-party merchant's 162 attempt to use the token and/or access the CHD associated with the token. In one embodiment, in response to the third-party merchant's 162 failed attempt to access the CHD, the tokenization provider system 102 can replace the token at the tokenization provider system 102 and the merchant environment 104 with a new token.
If the third-party merchant 162 is authorized to use the token, the CHD access system 124 provides access to CHD associated with the token at block 314. In one embodiment, providing access to the CHD comprises providing the CHD to one or more of the POS 166 and the computing system 164. In one embodiment, if given access to the CHD, the third-party merchant 162 can view the CHD. Alternatively, the third-party merchant 162 can initiate a transaction using the CHD at the POS 166, but without viewing the CHD. In one embodiment, providing access to the CHD comprises the gateway 126 performing a transaction using the CHD on behalf of the third-party merchant 162. In one embodiment, providing the third-party merchant 162 with access to the CHD can include logging the third-party merchant's 162 access of the CHD at the CHD access log repository 136.
At block 316, the CHD access system 124 removes the third-party merchant's 162 authorization to use the token, and consequently, the third-party merchant's 162 authorization to access the CHD at the tokenization provider system 102. In one embodiment, removing the third-party merchant's 162 authorization to use the token can comprise disassociating the token and the third-party merchant 162 at the token access repository 134. In one embodiment, the threshold for removing the third-party merchant's 162 authorization to use the token can be based on any predetermined event. For example, authorization can be removed after the third-party merchant 162 uses the token or accesses the CHD a pre-determined number of times, such as once or five-times. As a second example, authorization can be removed after a pre-defined time period, such as 15-minutes from the time merchant 142 authorizes the third-party merchant 162 to use the token, or 10-minutes from the time that the third-party merchant 162 access the CHD using the token. In one embodiment, block 316 is optional.
Second Example of a Token Provisioning Process
FIG. 4 illustrates a flow diagram for a second example embodiment of a token provisioning process 400. The process 400 can be implemented by any system that can generate and associate a token with CHD on behalf of a merchant 142 and can provide a second merchant, such as the third-party merchant 162, with access to the token. For example, the process 400, in whole or in part, can be implemented by one or more of the token access system 122, the CHD access system 124, and the gateway 126. In one embodiment, the second merchant can be a merchant that is associated with the merchant 142, such as an employee of the merchant 142. Although any number of systems, in whole or in part, can implement the process 400, to simplify discussion, the process 400 will be described as being generally implemented by the token access system 122. In some embodiments, the process 400 can be used to provide either a third-party merchant (e.g. the third-party merchant 162), or an employee of the merchant 142 or the merchant environment 104 (e.g. the merchant 142) with access to a token or CHD associated with the token. To simplify discussion, the process 400 will be described as being used to provide the third-party merchant 162 with access to the token or CHD associated with the token.
The process 400 begins at block 402, where, for example, the token access system 122 receives user authentication information associated with the merchant 142. This user authentication information can comprise any information necessary for the token access system 122 to authenticate the merchant 142. For example, the user authentication information can comprise a user name, a password, and a RSA token code, to name a few.
At decision block 404, the token access system 122 determines if the merchant 142 is authorized to grant a second merchant access to a token. In one embodiment, granting the second merchant access to the token can include granting the second merchant the ability to use the token to process a transaction. In one embodiment, decision block 404 comprises determining if the merchant 142 is authorized to access one or more of the tokenization provider system 102, the token access system 122 and the gateway 126. In one embodiment, the merchant 142 may have access to the tokenization provider system 102 without having permission to access all of the systems associated with the tokenization provider system 102. For example, the merchant 142 may have access to the gateway 126 enabling the merchant 142 to process transactions for a customer, but may not have access to the token access system 122 thereby preventing the merchant 142 from providing token access to a second merchant. In one embodiment, the admin 148 determines the merchant's 142 level of access to the tokenization provider system 102. The admin 148 can configure an account associated with the merchant 142 and the tokenization provider system 102 to restrict the merchant's 142 level of access to one or more of systems, tokens, and CHD associated with the tokenization provider system 102.
If the merchant 142 is not authorized to grant a second merchant access to a token, the token access system 122 rejects the merchant 142 from further accessing the token access system 122 at block 406. If the merchant 142 is authorized to grant token access to a second merchant, the token access system 122 receives the identity of a token from the merchant 142 at block 408. Receiving the identity of the token can comprise receiving a token or receiving a token identifier associated with the token. Further, receiving the identity of the token may include receiving a customer record that is associated with a token. Advantageously, in some embodiments, by providing a customer record (or portion thereof, such as a customer record identifier) that is associated with a token to the token access system 122, the merchant 142 can grant token access without knowing the token value, knowing that a token exists, or having any understanding of how tokenization works.
In one embodiment, the token access system 122 verifies that the merchant 142 provided a token associated with the merchant 142 or the merchant environment 104. If the token is not associated with the merchant 142 or the merchant environment 104, the token access system can reject the token. In one embodiment, the token access system 122 can also lock the merchant 142 out of the tokenization provider system 102, log the merchant's 142 actions at the CHD access log repository 130, report the access attempt to the admin 148, or combinations of the same.
At block 410, the token access system 122 receives the identity of the third-party merchant 162, the user whom the merchant 142 wishes to grant token access. In some embodiments, the token access system 122 receives the identity of the third-party merchant environment 106 or an organization associated with the third-party merchant environment 106. In one embodiment, receiving the identity of the third-party merchant 162 comprises receiving the identity of a merchant account associated with the tokenization provider system 102 and the third-party merchant 162. As previously described, the identity can include any information that identifies the third-party merchant 162, or third-party merchant environment 106, to the tokenization provider system 102. This can include, for example, a unique identifier selected by the tokenization provider system 102 or the third-party merchant 162. As additional examples, the identifying information may include an e-mail address, a phone number, or any other contact information. Advantageously, in some embodiments, providing contact information as an identifier enables the merchant 142 to identify a third-party merchant 162 that has not yet registered with the tokenization provider system 102 or without knowing the third-party merchant's 162 unique identifier.
The token access system 122 may also receive a time-based or event-based set of conditions associated with the third-party merchant 162 that limits the third-party merchant's 162 access to the CHD. For example, the conditions may limit the time-period in which the third-party merchant 162 can access the CHD or the number of times the third-party merchant 162 can access the CHD using the token. Further, in embodiments where the tokenization provider system 102 provides CHD access by performing transactions on behalf of the third-party merchant 162, the conditions can include a monetary limit. Advantageously, in some embodiments, setting a monetary limit can prevent a third-party merchant 162 from quoting one price to a customer or merchant 142 while charging a higher price once access to the CHD is obtained. The admin 148 may also pre-define the set of conditions such that each time the merchant 142 provides a third-party merchant with CHD access, the set of conditions are automatically associated with the CHD access.
At decision block 412, the token access system 122 determines if the third-party merchant 162 is authorized to access tokens. This determination can comprise determining if the third-party merchant 162 is registered with the tokenization provider system 102 and/or if the third-party merchant 162 is authorized to access tokens associated with the merchant environment 104. If the third-party merchant 162 is not authorized to access tokens, the token access system 122 rejects the merchant selection of the third-party merchant 162 at block 414. In some embodiments, rejecting the merchant selection can comprise sending a registration request to or initiating a registration process with the third-party merchant 162. In some embodiments, rejecting the merchant selection can comprise requesting that the admin 148 authorize the third-party merchant 162 to access tokens associated with the merchant environment 104, if so desired.
If the third-party merchant 162 is authorized to access tokens, the token access system 122 generates a set of random words at block 416 using, for example, the authorization factor generator 128. Alternatively, the token access system 122 can generate any other type of authentication factor using, for example, the authorization factor generator 128, as described above with respect to FIG. 1. At block 418, the set of random words are associated with the token identified at block 408. At block 420, the set of random words are associated with the third-party merchant 162. In one embodiment, the set of random words are associated with a merchant account associated with the third-party merchant environment 106. An employee associated with the third-party merchant environment 106 that has access to the merchant account can then use the set of random words and obtain access to the token and associated CHD as described with respect to FIG. 5.
At block 422, the set of random words are provided to the third-party merchant 162. In one embodiment, the set of random words can be provided by any type of communication. For example, the token access system 122 can provide the set or random words by email, text, or voicemail, to name a few. In one embodiment, the set of random words are provided to the merchant 142. The merchant 142 can then provide the set of random words to the third-party merchant 162. In one embodiment, performing block 422 can further comprise performing block 212 as described with respect to FIG. 2.
In one embodiment, the set of random words are provided in an encrypted format to the third-party merchant 162. The third-party merchant 162 can then decrypt the encrypted set of random words. In one embodiment, the set of random words can be provided in clear text. However, in some embodiments, because the set of random words are associated with the third-party merchant 162, or the merchant account, at the tokenization provider system 102, malicious users are prevented from using the set of random words to access the token and/or CHD associated with the token.
Second Example Process for Accessing Cardholder Data
FIG. 5 illustrates a flow diagram for a second example embodiment of a process 500 for accessing cardholder data. The process 500 can be implemented by any system that can provide a second merchant, such as the third-party merchant 162, with CHD associated with a token, which was created in response to a first merchant, such as the merchant 142, providing the CHD to the system or a related system. For example, the process 500, in whole or in part, can be implemented by one or more of the token access system 122, the CHD access system 124, and the gateway 126. In one embodiment, the second merchant can be a merchant that is associated with the merchant 142, such as an employee of the merchant 142. In one embodiment, the process 500 can be used by the merchant 142, who initially provided the CHD, or an employee of the merchant 142, to retrieve the CHD. Further, the process 500 can be used by the third-party merchant 162 to access CHD from any number of merchants who have authorized the third-party merchant 162 to use their tokens. Although any number of systems, in whole or in part, can implement the process 500, to simplify discussion, the process 500 will be described as being generally implemented by the CHD access system 124.
The process 500 begins at block 502, where, for example, the CHD access system 124 receives user authentication information associated with the third-party merchant 162. This user authentication information can generally include any information that can be used to authenticate the third-party merchant 162. For example, the user authentication information can include: a user name, a password, a RSA token code, and the response to a challenge-response test, such as a captcha response or an answer to a security question.
At decision block 504, the CHD access system 124 determines, based at least in part on the user authentication information, if the third-party merchant 162 is authorized to access the tokenization provider system 102, or any system associated with the tokenization provider system 102. In one embodiment, decision block 504 can include determining if the third-party merchant 162 is registered with the tokenization provider system 102. In one embodiment, decision block 504 can include determining if the merchant 142, or the admin 148, has provided the third-party merchant 162 with access to tokens associated with the merchant 142 or the merchant environment 104.
If the third-party merchant 162 is not authorized to use the tokenization provider system 102, the CHD access system rejects the third-party merchant 162 at block 506. In one embodiment, rejecting the third-party merchant 162 can comprise initiating a registration process that enables the third-party merchant 162 to register with the tokenization provider system 102. In one embodiment, rejecting the third-party merchant 162 can comprise providing an error message to the third-party merchant 162.
If the third-party merchant 162 is authorized to access the tokenization provider system 102, the CHD access system 124 receives a set of words from the third-party merchant 162 at block 508. Alternatively, or additionally, the CHD access system 124 receives any authorization factor generated by the authorization factor generator 128 and provided to the third-party merchant 162 as part of the implementation of the process 400.
At decision block 510, the CHD access system 124 determines if the set of words received from the third-party merchant 162 match a set of random words associated with a token. In one embodiment, the third-party merchant 162 also identifies the token. Alternatively, the CHD access system 124 identifies the token by determining if there exists any token associated with a set of random words that match the received set of words and if so, the CHD access system 124 determines if the third-party merchant 162 is authorized to access that token.
If the set of words received from the third-party merchant 162 do not match a set of random words associated with a token, the CHD access system 124 rejects the third-party merchant 162 at block 506. Rejecting the third-party merchant 162 can comprise causing an error message to be presented to the third-party merchant 162. Further, in some embodiments, rejecting the third-party merchant 162 can cause an account associated with the third-party merchant 162 to be deactivated or suspended.
If the set of words received from the third-party merchant 162 matches a set of random words associated with a token, the CHD access system 124, at block 512, accesses the token associated with the set of random words at, for example, the tokenization provider repository system 130. At block 514, the CHD access system 124 obtains CHD associated with the token.
At block 516, the CHD access system 124 provides the third-party merchant 162 with access to the CHD over a secure connection. In one embodiment, the CHD is provided via the network 170. In one embodiment, the CHD is provided to the computing system 164 at block 516. The computing system 164 can then provide the CHD directly to the POS 166 and/or cause the CHD to be presented to the third-party merchant 162. In one embodiment, the CHD is provided to the POS 166 at block 516. The POS 166 can then provide the CHD to the credit card processor 174 to complete a transaction.
In one embodiment, providing the third-party merchant 162 with access to the CHD can comprise the CHD access system 124 receiving transaction information associated with a requested transaction. The CHD access system 124 can then provide the CHD and the transaction information to the gateway 126, which can then process the transaction using the credit card processors 172. Advantageously, in some embodiments, the third-party merchant 162 is able to use the CHD without the CHD being presented to the third-party merchant 162. In one embodiment, a subset of the CHD is presented to the third-party merchant 162 enabling the third-party merchant 162 to log the transaction and/or to verify that the transaction is associated with the correct CHD or customer. In some embodiments, the CHD access system 124 may verify that the value of the transaction does not exceed a pre-defined transaction-limit associated with the third-party merchant's 162 access of the CHD. If the transaction-limit is exceeded, the CHD access system 124 can reject the transaction. Further, the CHD access system 124 can report the attempted transaction to the merchant 142 or the admin 148. The CHD access system 124 can also report successful transactions to the merchant 142 thereby enabling the merchant 142 to verify that the third-party merchant 162 processed the transaction for the merchant's 142 customer.
In one embodiment, the CHD access system 124 logs each access and/or attempted access of the token and/or CHD at the CHD access log repository 136. Advantageously, in some embodiments, if there is a disputed credit card use, the CHD access log repository 136 can be accessed to determine what parties may have accessed the token and/or CHD around the time associated with the disputed credit card use.
At block 518, the CHD access system 124 disassociates the set of random words from the token and the third-party merchant 162. In one embodiment, disassociating the set of random words can include deleting or removing the words from the tokenization provider system 102. In one embodiment, block 518 is performed in response to the third-party merchant 162 accessing the token and/or CHD. In one embodiment, block 518 is performed in response to a pre-defined event. This pre-defined event can include any event associated with the token and/or CHD. For example, the pre-defined event can comprise: the number of times the set of random words have been provided by the third-party merchant 162 to the tokenization provider system 102 (e.g. once, or five times); the length of time since the set of random words were associated with the token (e.g. 15-minutes); or the length of time since the third-party merchant 162 first accessed the token and/or CHD, to name a few.
Further, in some embodiments, the CHD access system 124 may disassociate the set of random words from the token without the third-party merchant 162 having ever accessed or attempted to access the CHD. For example, if the pre-defined event is a time-limit or time-period, the CHD access system 124 can disassociate the set of random words from the token at the expiration of the time-limit or time-period whether or not the third-party merchant 162 accessed the CHD. In addition, if the owner of the token (e.g. the merchant 142) ceases to trust the third-party merchant 162, the token owner can access the tokenization provider system 102 and remove the third-party merchant's 162 authorization to access the token, and thus the CHD associated with the token. Removing the authorization to access the token may include disassociating the set of random words from the token prior to the pre-defined event occurring.
In one embodiment, the third-party merchant 162 can communicate with the CHD access system 124 using any secure system. For example, the third-party merchant 162 can provide the user authentication information or the set of random words using a secure portal or webpage associated with the tokenization provider system 102. Alternatively, the third-party merchant 162 can use a virtual private network (VPN) or a secure application obtained from the tokenization provider system 102 to access the tokenization provider system 102 and to provide the user authentication information or the set of random words to the CHD access system 124.
Advantageously, in some embodiments, a merchant can use the process 200 or 400 to reduce CHD misuse or the misappropriation of CHD by a malicious user because the CHD is not stored with the merchant. Further, in some embodiments, using the process 300 or 500, the merchant can provide CHD to a third-party merchant who may not be a customer of the tokenization provider system or who may not be capable of interacting with the tokenization provider system due to, for example, differing CHD processing systems or legal regulations in the third-party merchant's country or jurisdiction. Similarly, in some embodiments, the merchant can use the process 300 or 500 to require CHD to complete a transaction with a bank or credit card processor whose payment card processing systems may not be capable of interacting with the tokenization provider system.
Example Information Flow
FIG. 6 illustrates a flow diagram for an example flow 600 of information using a tokenization provider system 606. Some or all of the systems described herein can be used to facilitate the flow illustrated in FIG. 6. For example, the interaction with the merchant 604 can be via a computing system associated with the merchant 604. As a second example, interaction with the third-party merchant may be via a POS.
The flow 600 begins at event 1 with the customer 602 providing CHD to the merchant 604. This CHD is then provided by the merchant 604 to the tokenization provider system 606 at event 2. At event 3, the tokenization provider system 606 generates a token and associates the token with the CHD. This token is provided to the merchant at event 4. Generally, but not necessarily, the merchant 604 can store the token in place of the CHD and can destroy or not save any copies of the CHD that the merchant 604 received. In other embodiments, the merchant 604 generates the token or at least a portion of the token instead of (or in addition to) the tokenization provider system 606.
At event 5, the customer 602 provides a product or service request to the merchant 604 for a product or service that may be provided by the third-party merchant 608. For example, the request may be for opera tickets, flowers, or for an appointment at a spa. At event 6, the merchant 604 authorizes the third-party merchant 608 to access the token at the tokenization provider system 606 by communicating the authorization to the tokenization provider system 606. The tokenization provider system 606, at event 7, generates an authorization factor, such as a set of four random words, and associates the third-party merchant with the authorization factor and the token.
At event 8, the tokenization provider system 606 provides the authorization factor to the merchant 604, such as by email or through a web-portal. The merchant 604 provides the authorization factor and the customer's 602 product or service request to the third-party merchant 608 at event 9. At event 10, the third-party merchant 608 authenticates with the tokenization provider system 606. The third-party merchant 608 also provides the authorization factor to the tokenization provider system 606 at event 10. In some embodiments, authenticating and providing the authorization factor may be two separate events.
Assuming that the third-party merchant 608 is authenticated and that the tokenization provider system 606 determines that the third-party merchant 608 is authorized to access the token, the tokenization provider system 606 provides access to the CHD associated with the token at event 11. In some embodiments, providing access to the CHD may include providing the CHD to the third-party merchant 608.
The flow of information illustrated in FIG. 6 is for illustrative purposes and is not intended to be limiting. For example, in some cases, instead of, or in addition to, the tokenization provider system 606 providing the authorization factor to the merchant 604 at event 8, the tokenization provider system 606 can provide the authorization factor to the third-party merchant 608.
Examples of CHD Interface Screens
FIGS. 7-12 illustrate several non-limiting embodiments of interface screens that can be electronically generated by one or more of the tokenization provider system 102, the token access system 122, or any other system that can regulate the access of CHD associated with a token. Although the interface screens are illustrated as Graphical User Interfaces (GUIs), the interface screens are not limited as such. For example, the interface screens can include command-line interfaces (CLIs), three-dimensional interfaces, or a combination of interface types.
A user, such as the third-party merchant 162, can access the interface screens illustrated in FIGS. 7-12 using a POS 166, a computing system 164, or the like. In some embodiments, some or all of the interface screens may be included as part of a web-based or Internet-based software application that is accessed via a network 170. Alternatively, some or all of the interface screens may be part of a client-side software application stored locally, such as on the computing system 164, which can communicate over the network 170 with a server-side application stored on, for example, the token access system 122.
FIG. 7 illustrates an embodiment of a user login interface 700. In some embodiments, the user login interface 700 enables a user (e.g. the third-party merchant 162) who desires to access CHD associated with another user's token (e.g. the merchant 142 or organization associated with the merchant 142) to access the token access system 122. In some embodiments, users who desire to provide token access to another party (e.g. a user or organization) can use the user login interface 700 to access the token access system 122. The third-party merchant 162 can provide a user name and password using the login panel 702 to authenticate with the token access system 122. Other authentication mechanisms are possible. For example, the login panel 702 can present the third-party merchant 162 with an opportunity to present a unique cryptographic identifier or key. This key, in certain embodiments, can then be matched to or decrypted with a corresponding public key to authenticate the third-party merchant 162.
The user login interface 700 includes a registration link 704. This registration link 704 can be used to direct an unregistered user to a registration screen, such as the user registration interface 800 depicted in FIG. 8. Further, the user login interface 700 can also include a login link 706 that can be used to direct a user (e.g. the merchant 142) who is registered with the tokenization provider system 102 to another login interface. This additional login interface can be user by subscribers of the tokenization provider system 102 to manage token access, such as to grant token access to third-party merchant organizations and/or users.
FIG. 8 illustrates an embodiment of a user registration interface 800. The user registration interface 800 enables a user to register with the token access system 122 by providing, for example, contact information, a username, and a password. The user registration interface 800 can be used, for example, by the third-party merchant 162 of FIG. 1, who may not necessarily be a customer of the provider of the tokenization provider system 102. By registering with the token access system 122, in some embodiments, the third-party merchant 162 can access CHD associated with tokens that have been associated with the third-party merchant 162 or the third-party merchant environment 106 by the user who is a customer of the organization associated with the tokenization provider system 102.
In some embodiments, a merchant 142 or an organization associated with the merchant environment 104 that is a customer of the organization associated with the tokenization provider system 102 can use the user registration interface 800 to register an account with the token access system 122. Advantageously, in certain embodiments, this enables merchants to share access to CHD and/or tokens with other merchants whether or not the other merchants are customers of the tokenization provider system 102.
FIG. 9 illustrates an embodiment of a merchant selection interface 900. The merchant selection interface 900 enables a user (e.g. the third-party merchant 162) to select or connect to another user or associated organization (e.g. a merchant 142, a merchant environment 104, or an organization associated with the merchant environment 104) that has provided token access to the user or an organization associated with the user (e.g. the user's employer). For example, the third-party merchant 162 can use the merchant selection interface 900 to select the organization associated with the merchant environment 104. In some embodiments, the third-party merchant 162 can select the merchant environment 104. For example, if the merchant organization is a hotel chain, the third-party merchant 162 can select a specific franchise, location, or branch of the hotel chain using the merchant selection interface 900.
In some embodiments, the merchant selection interface 900 enables the third-party merchant 162 to select any organization (or user) registered with the tokenization provider system 102. Alternatively, the merchant selection interface 900 may be configured to enable the third-party merchant 162 to select organizations (or users) that are currently sharing a token with the third-party merchant 162. In some cases, the third-party merchant 162 may be able to select any organization (or user) that has shared a token with the third-party merchant 162 at some point, whether or not the organization is currently sharing a token with the third-party merchant 162.
The merchant selection interface 900 can include an existing connections panel 902. The existing connections panel 902 can list some or all of the users or organizations with whom the third-party merchant 162 is currently connected. In some embodiments, the existing connections panel 902 may list organizations that are sharing a token with the third-party merchant 162. Alternatively, the existing connections panel 902 may list any organization with which the third-party merchant 162 has established a connection. In some embodiments, the third-party merchant 162 can select organizations with which to connect. For some embodiments, organizations that are sharing tokens with the third-party merchant 162 (or an associated organization) are automatically connected to the third-party merchant 162 and may automatically be listed on the existing connections panel 902.
The existing connections panel 902 can list connections in any order. For example, the existing connection panel 902 may list the organizations that are currently sharing a connection before displaying other connections. Alternatively, for example, organizations may be listed in alphabetical order, by frequency of access, or based on when the organization was added to the list.
In some implementations, the merchant selection interface 900 can include one or more search fields 904 for locating organizations that may have shared a token with the third-party merchant 162 (or an associated organization). These search fields 904 can include, for example, a name field, a city field, an address field, or a product or service field (e.g. electronics, hospitality, restaurants, etc.), to name a few. In some cases, the search fields 904 may be used to search for an organization that is known to the tokenization provider system 102 or that has registered with the tokenization provider system 102.
The results list 906 can list the organizations identified based on the information supplied to the search fields 904. Although illustrated as a drop-down list, the results list 906 is not limited as such and may include any type of GUI element, or other interface element, for displaying the list of results. For example, the results list 906 may include a dialog box, pop-up dialog box, a combo box, or other GUI element.
FIG. 10 illustrates an example embodiment of a populated merchant selection interface 1000. The populated merchant selection interface 1000 is substantially similar to the merchant selection interface 900. However, the search fields 904 and the results list 906 of the populated merchant selection interface 1000 illustrate sample search information and sample results respectively.
FIG. 11 illustrates an example embodiment of a CHD access interface 1100. The CHD access interface 1100 enables the third-party merchant 162 (or other user) to access CHD associated with a token that has been shared with the third-party merchant 162 or an associated organization of the third-party merchant 162. To access the CHD, in certain embodiments, the third-party merchant 162 can provide an authorization factor associated with the token that is associated with the CHD. As has previously been described, the authorization factor can be, for example, a set of four words. Further, the third-party merchant 162 can provide the authorization factor via authorization fields 1102. Authorization fields 1102 can include any GUI element for providing the authorization factor including, for example, a GUI element that allows for the uploading of an authentication file, such as a cryptographic key associated with the third-party merchant 162. In the illustrated embodiment, the authorization fields 1102 include four text fields for entering the authorization factor.
The CHD access interface 1100 may also include a challenge-response mechanism 1104. This challenge-response mechanism 1104 can include any mechanism for preventing automated systems, such as Internet bots, from accessing CHD using the CHD access interface 1100. For example, the challenge-response mechanism can include a security question, a Completely Automated Public Turing test to tell Computers and Humans Apart (CAPTCHA) (as illustrated in FIG. 11), combinations of the same, or the like.
FIG. 12 illustrates an example of a CHD provisioning interface 1200. The CHD provisioning interface 1200 can present CHD via CHD fields 1204 to a user, such as the third-party merchant 162. Further, the CHD provisioning interface 1200 can include a timer 1202 that identifies how much time is remaining for the third-party merchant 162 to access the CHD before the CHD is cleared from the CHD provisioning interface 1200.
In some embodiments, the CHD provisioning interface 1200 includes GUI fields for specifying a transaction. Advantageously, in certain embodiments, the tokenization provider system 102 can perform the transaction for the third-party merchant 162. Thus, in some embodiments, the CHD provisioning interface 1200 may not present the CHD to the third-party merchant 162. However, the CHD provisioning interface 1200 may present the status of the transaction, including a confirmation value.
Terminology
A number of computing systems have been described throughout this disclosure. The descriptions of these systems are not intended to limit the teachings or applicability of this disclosure. Further, the processing of the various components of the illustrated systems can be distributed across multiple machines, networks, and other computing resources. For example, the token access system 122, the CHD access system 124, and the authorization factor generator 128 can each be implemented as separate servers or computing systems, or alternatively, as one server or computing system. In addition, two or more components of a system can be combined into fewer components. Further, various components of the illustrated systems can be implemented in one or more virtual machines, rather than in dedicated computer hardware systems. Likewise, the data repositories shown can represent physical and/or logical data storage, including, for example, storage area networks or other distributed storage systems. Moreover, in some embodiments the connections between the components shown represent possible paths of data flow, rather than actual connections between hardware. While some examples of possible connections are shown, any of the subset of the components shown can communicate with any other subset of components in various implementations.
Depending on the embodiment, certain acts, events, or functions of any of the algorithms described herein can be performed in a different sequence, can be added, merged, or left out all together (e.g., not all described acts or events are necessary for the practice of the algorithms). Moreover, in certain embodiments, acts or events can be performed concurrently, e.g., through multi-threaded processing, interrupt processing, or multiple processors or processor cores or on other parallel architectures, rather than sequentially. Although certain computer-implemented tasks are described as being performed by a particular entity, other embodiments are possible in which these tasks are performed by a different entity.
Each of the various illustrated systems may be implemented as a computing system that is programmed or configured to perform the various functions described herein. The computing system may include multiple distinct computers or computing devices (e.g., physical servers, workstations, storage arrays, etc.) that communicate and interoperate over a network to perform the described functions. Each such computing device typically includes a processor (or multiple processors) that executes program instructions or modules stored in a memory or other non-transitory computer-readable storage medium. The various functions disclosed herein may be embodied in such program instructions, although some or all of the disclosed functions may alternatively be implemented in application-specific circuitry (e.g., ASICs or FPGAs) of the computer system. Where the computing system includes multiple computing devices, these devices may, but need not, be co-located. The results of the disclosed methods and tasks may be persistently stored by transforming physical storage devices, such as solid state memory chips and/or magnetic disks, into a different state. Each service described, such as those shown in FIG. 3, may be implemented by one or more computing devices, such as one or more physical servers programmed with associated server code.
Conditional language used herein, such as, among others, “can,” “might,” “may,” “e.g.,” and the like, unless specifically stated otherwise, or otherwise understood within the context as used, is generally intended to convey that certain embodiments include, while other embodiments do not include, certain features, elements and/or states. Thus, such conditional language is not generally intended to imply that features, elements and/or states are in any way required for one or more embodiments or that one or more embodiments necessarily include logic for deciding, with or without author input or prompting, whether these features, elements and/or states are included or are to be performed in any particular embodiment.
While the above detailed description has shown, described, and pointed out novel features as applied to various embodiments, it will be understood that various omissions, substitutions, and changes in the form and details of the devices or algorithms illustrated can be made without departing from the spirit of the disclosure. As will be recognized, the processes described herein can be embodied within a form that does not provide all of the features and benefits set forth herein, as some features can be used or practiced separately from others. The scope of protection is defined by the appended claims rather than by the foregoing description. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

## Claims

1. A system for sharing cardholder data, the system comprising:
a tokenization system configured to:
receive cardholder data (CHD) of a customer from a first merchant;
associate a token with the CHD in physical computer storage by storing a relationship between the token and the CHD in the physical storage, enabling the token to be used to represent the CHD; and
electronically transmit the token to the first merchant so as to enable the first merchant to perform a first transaction for the customer without the first merchant maintaining a copy of the CHD at a local storage system;

a token-access granting system comprising computer hardware, the token-access granting system configured to:
receive an indication from the first merchant that one or more of the token or the CHD are to be shared with a second merchant;
in response to receiving the indication, authorize the second merchant to access one or more of the token or the CHD, enabling the second merchant to perform a second transaction for the customer;
associate a first authorization factor with the token;
associate the first authorization factor with the second merchant; and
provide the first authorization factor to the second merchant;

a token provisioning system configured to:
authenticate the second merchant;
receive a second authorization factor from the second merchant;
determine whether the second authorization factor matches the first authorization factor; and
in response to determining that the second merchant is authenticated and that the second authorization factor matches the first authorization factor, provide the second merchant with access to one or more of the token or the CHD without presenting the CHD to the second merchant, and

a transaction system configured to:
access a transaction request associated with the second transaction; and
perform the second transaction on behalf of the second merchant and the customer in response to the token provisioning system providing the second merchant with access to one or more of the token or the CHD,
wherein the token-access granting system is further configured to remove authorization from the second merchant to access one or more of the token or the CHD by disassociating one or more of the token or the CHD from the second merchant at the physical computer storage, and
wherein said removing authorization from the second merchant occurs in response to a triggering event monitored by the token-access granting system.

2. The system of claim 1, wherein the token-access granting system is further configured to generate the first authorization factor.

3. The system of claim 1, wherein the first authorization factor comprises one or more of a word, a number, an image, a sound, and a challenge.

4. The system of claim 1, wherein the first authorization factor is random or pseudo-random.

5. The system of claim 1, wherein providing the first authorization factor to the second merchant comprises providing an expected authorization factor response to the second merchant.

6. The system of claim 1, wherein authenticating the second merchant comprises determining whether the second merchant is authorized to provide the second authorization factor.

7. The system of claim 1, further comprising a registration system configured to register the second merchant.

8. The system of claim 7, wherein the registration system is further configured to:
determine whether the second merchant is registered with the tokenization system; and
in response to determining that the second merchant is unregistered, initiate registration of the second merchant with the tokenization system.

9. A system for sharing cardholder data, the system comprising:
a token acquisition system configured to:
provide cardholder data (CHD) of a customer to a tokenization provider system; and
receive electronically a token associated with the CHD so as to enable a first merchant associated with the token acquisition system to perform a first transaction for the customer without the first merchant storing a copy of the CHD; and

a token sharing system configured to:
provide to the tokenization provider system an indication that one or more of the token or the CHD are to be shared with a second merchant enabling the second merchant to perform a second transaction for the customer;
generate an authorization factor;
provide the authorization factor to the tokenization provider system to associate with the second merchant and one or more of the token or the CHD;
provide the authorization factor to the second merchant enabling the second merchant to use the authorization factor to access one or more of the token or the CHD; and
instruct the tokenization provider system to remove authorization for the second merchant to access one or more of the token or the CHD,

wherein removal of authorization to access one or more of the token or the CHD comprises disassociating the token or the CHD from the second merchant at a physical computer storage, and
wherein the token acquisition system and the token sharing system comprise computer hardware.

10. The system of claim 1, wherein the triggering event comprises at least one of a command received at the token-access granting system; a number of access of the token or the CHD; and a time period associated with access by the second merchant of the token or the CHD.