Privacy Server Dynamic Account Number Generation

The patent introduces a privacy server as an intermediary between the user and merchant. The privacy server generates and manages dynamic account numbers, eliminating the need for users to directly handle sensitive payment information. This intermediary approach secures transactions while avoiding the infrastructure complexity of traditional virtual account systems, as the privacy server handles all account management centrally.

The patent implements dynamic account numbers that change with each transaction or time period, rather than static virtual account numbers. This dynamic approach enhances security by preventing reuse attacks while allowing the same account to be used repeatedly across different transactions. The account numbers are generated on-demand and can be configured for single-use, multi-use, or recurring transactions, providing flexibility without requiring separate infrastructure for different account types.

The patent implements pre-generation of account numbers in batches or ahead of time for anticipated transactions. The privacy server can generate account numbers in advance and store them in a ready-to-use state, reducing the real-time processing burden during actual transactions. This preliminary action maintains security through dynamic number generation while minimizing transaction delays by having numbers prepared beforehand.

The patent allows configuration of account number generation parameters, including the frequency and timing of generation. System administrators can adjust parameters to balance security requirements against processing time constraints. For high-security scenarios, account numbers can be generated immediately before use. For lower-risk transactions, pre-generated numbers can be used, allowing flexible parameter adjustment to optimize the security-time tradeoff.

The patent implements dynamically changing account numbers that can be configured for reusable accounts. Instead of static card numbers that remain constant, the system generates new account numbers periodically or per transaction while maintaining the ability to reuse the same underlying payment instrument. This dynamic approach allows users to benefit from reusable payment convenience while significantly reducing fraud risk, as stolen account numbers become invalid after a certain period or number of uses.

The patent incorporates monitoring and control mechanisms that track account number usage patterns. The system can detect anomalies such as unusual transaction locations, amounts, or frequencies and respond by invalidating account numbers or requiring additional authentication. This feedback loop maintains user convenience through reusable accounts while actively managing fraud risk through real-time monitoring and adaptive response.