Dynamically verifying a signature for a transaction

A device, comprising:

• one or more memories storing images of a plurality of comparator signatures, including an image of a first comparator signature and an image of a second comparator signature, and information that identifies a plurality of priority levels corresponding to the plurality of comparator signatures,
• wherein the plurality of comparator signatures are previous signatures of the individual, and
• wherein the plurality of priority levels includes a first priority level, corresponding to the first comparator signature, and a second priority level, corresponding to the second comparator signature;
• and
• one or more processors, coupled to the one or more memories, to:
• receive a request to approve a transaction,
• wherein the request includes:
• transaction data related to the transaction, and
• an image of a provided signature of an individual that submitted the request;
• process, after receiving the transaction data, the transaction data to identify values for a set of parameters related to the transaction;
• determine, after receiving the request, that the transaction is associated with the first priority level based on the values for the set of parameters and the information that identifies the plurality of priority levels;
• process the image of the provided signature using at least one of:
• a computer vision technique, or
• a vector-based technique;
• select, from the one or more memories, the image of the first comparator signature based on the transaction being associated with the first priority level and the information that identifies the plurality of priority levels;
• perform a comparison of the first comparator signature in the image of the first comparator signature to the provided signature in the image of the provided signature after processing the image of the provided signature and selecting the image of the first comparator signature;
• and
• determine, based on a result of performing the comparison, whether the comparison satisfies a matching threshold.

A non-transitory computer-readable medium storing instructions, the instructions comprising:

• one or more instructions that, when executed by one or more processors of a first device, cause the one or more processors to:
• store, in a memory of the first device, images of a plurality of comparator signatures, including an image of a first comparator signature and an image of a second comparator signature, and information that identifies a plurality of priority levels corresponding to the plurality of comparator signatures,
• wherein the plurality of comparator signatures were previously provided by the individual, and
• wherein the plurality of priority levels includes a first priority level, corresponding to the first comparator signature, and a second priority level, corresponding to the second comparator signature;
• receive, from a second device, a request to approve a transaction,
• wherein the request includes:
• transaction data related to the transaction, and
• an image of a provided signature of an individual that submitted the request;
• determine, after receiving the request, that the transaction is associated with the first priority level based on the transaction data,
• wherein different priority levels are associated with different values for a set of parameters related to the transaction;
• process the image of the provided signature using at least one of:
• an image processing technique, or
• a vector-based technique;
• select, in association with processing the image and from the memory, the image of the first comparator signature based on the transaction being associated with the first priority level and the information that identifies the plurality of priority levels;
• perform a comparison of the first comparator signature in the image of the first comparator signature to the provided signature in the image of the provided signature after processing the image of the provided signature and selecting the image of the first comparator signature;
• determine, based on a result of performing the comparison, a similarity score that indicates a degree of similarity between the comparator signature and the provided signature;
• and
• determine, based on determining the similarity score, whether the similarity score satisfies the matching threshold.