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According to Visa, the plugin facilitates the delivery of authentication requests to an access control server, which then carries out the authentication policy as defined by the issuer bank. Noka explained that this system will enable card-issuing banks to implement their own dynamic authentication without affecting the merchant's bank authorization process.įor the merchant, supporting the infrastructure would involve installing a plugin, he said. He said Visa is prepared to support this implementation, having spent efforts building an infrastructure it calls 3-D Secure (three domain secure), also known as Verified by Visa. The payment structure is similar to Internet banking transactions in Singapore, where local banks support dynamic passwords as part of the two-factor authentication process. These passwords can be generated by a token or sent via SMS to the consumer, he added. This helps ensure passwords, even when stolen, will no longer be valid for use in online transactions after a time limit, Noka said in an interview with ZDNet Asia. Ingo Noka, Visa's Asia-Pacific head of data security and enterprise risk management, explained that dynamic authentication uses passwords that are generated every 10 seconds. SINGAPORE-The Monetary Authority of Singapore (MAS) is exploring ways to enhance security for online purchases, according to an industry player, who adds that dynamic authentication will be a good step toward that direction.