Self-checkout security validation control

A system, comprising:

• one or more memories collectively containing one or more programs;
• and
• one or more processors, wherein the one or more processors are configured to, individually or collectively, perform an operation comprising:
• retrieving system-level transaction data;
• receiving identity information related to a user;
• responsive to receiving identity information related to the user, retrieving user-specific transaction data using the identity information;
• determining one or more validation parameters based on the system-level transaction data and the user-specific transaction data, wherein the one or more validation parameters comprises at least one of a validation percentage, a weight tolerance threshold, or a visual similarity threshold;
• selecting one or more items for validation within a self-checkout transaction, based on the validation percentage;
• performing a validation check on each of the one or more items;
• responsive to performing the validation check on each of the one or more items, calculating one or more validation performance indicators, the one or more validation performance indicators comprising at least one of a validation failure rate and a false intervention rate;
• updating the system-level transaction data and the user-specific transaction data with the one or more validation performance indicators;
• calculating a security score based on the system-level transaction data;
• calculating a trust score based on the user-specific transaction data;
• generating a validation confidence score by combining the security score and trust score, wherein the validation confidence score is calculated as a weighted average of the security score and the trust score, wherein a weight is assigned to each respective score based on validation sensitivity;
• and
• adjusting the one or more validation parameters based on the validation confidence score.

One or more non-transitory computer-readable media containing, in any combination, computer program code that, when executed by a computer system, performs an operation comprising:

• retrieving system-level transaction data;
• receiving identity information related to a user;
• responsive to receiving identity information related to the user, retrieving user-specific transaction data using the identity information;
• determining one or more validation parameters based on the system-level transaction data and the user-specific transaction data, wherein the one or more validation parameters comprises at least one of a validation percentage, a weight tolerance threshold, or a visual similarity threshold;
• selecting one or more items for validation within a self-checkout transaction, based on the validation percentage;
• performing a validation check on each of the one or more items;
• responsive to performing the validation check on each of the one or more items, calculating one or more validation performance indicators, the one or more validation performance indicators comprising at least one of a validation failure rate and a false intervention rate;
• updating the system-level transaction data and the user-specific transaction data with the one or more validation performance indicators;
• calculating a security score based on the system-level transaction data;
• calculating a trust score based on the user-specific transaction data;
• generating a validation confidence score by combining the security score and trust score,
• wherein the validation confidence score is calculated as a weighted average of the security score and the trust score, wherein a weight is assigned to each respective score based on validation sensitivity;
• and
• adjusting the one or more validation parameters based on the validation confidence score.