6. A system for conducting an online transaction on a website involving sensitive information, the system comprising: one or more processors; and one or more storage devices coupled to the one or more processors and adapted for storing a character string; wherein the one or more processors execute a gatekeeper module to: register at least one entity with the gatekeeper module wherein registering comprises associating the at least one entity with a subscription level; associate a unique token with a sub-string of a character string wherein a direct link does not exist between the unique token and the character string, the character string comprising the sensitive information and the sub-string being configured to identify the character string without revealing the sensitive information; receive a request to display the sub-string on the website during the online transaction, the request comprising the unique token; use the unique token during the online transaction to access and retrieve the sub-string without accessing the character string; display the retrieved sub-string on the website during the online transaction without revealing the sensitive information; and after the sub-string is selected to facilitate the online transaction: save a record for the online transaction comprising information for the online transaction and the unique token; and during processing of the online transaction: use the unique token for intermediate steps during the processing of the online transaction; and only access the character string in the one or more storage devices using the unique token and the sub-string to retrieve the sensitive information and to complete the online transaction using the information for the online transaction and the sensitive information after receiving a request for the sensitive information from at least one of the at least one registered entity associated with a subscription level associated with a privilege to receive the requested sensitive information.
6. A system for conducting an online transaction on a website involving sensitive information, the system comprising: one or more processors; and one or more storage devices coupled to the one or more processors and adapted for storing a character string; wherein the one or more processors execute a gatekeeper module to: register at least one entity with the gatekeeper module wherein registering comprises associating the at least one entity with a subscription level; associate a unique token with a sub-string of a character string wherein a direct link does not exist between the unique token and the character string, the character string comprising the sensitive information and the sub-string being configured to identify the character string without revealing the sensitive information; receive a request to display the sub-string on the website during the online transaction, the request comprising the unique token; use the unique token during the online transaction to access and retrieve the sub-string without accessing the character string; display the retrieved sub-string on the website during the online transaction without revealing the sensitive information; and after the sub-string is selected to facilitate the online transaction: save a record for the online transaction comprising information for the online transaction and the unique token; and during processing of the online transaction: use the unique token for intermediate steps during the processing of the online transaction; and only access the character string in the one or more storage devices using the unique token and the sub-string to retrieve the sensitive information and to complete the online transaction using the information for the online transaction and the sensitive information after receiving a request for the sensitive information from at least one of the at least one registered entity associated with a subscription level associated with a privilege to receive the requested sensitive information. 9. The system of claim 6 , wherein the one or more storage devices are remote from where the record is saved.