1. A method, comprising: capturing an image of a document using a camera of a mobile device; classifying the image as an image of a financial document, the classifying further comprising: generating a first representation of the image, the first representation being characterized by a reduced resolution; generating a first feature vector based on the first representation; comparing the first feature vector to a plurality of reference feature matrices; and classifying an object depicted in the image as a member of a particular object class based at least in part on the comparing; determine one or more object features of the object based at least in part on the particular object class; performing optical character recognition (OCR) on the image of the financial document; extracting an identifier of the financial document from the image based at least in part on the OCR; associating the image of the financial document with metadata descriptive of one or more of the financial document and financial information relating to the financial document; and storing the image of the financial document and the associated metadata to a memory of the mobile device.
1. A method, comprising: capturing an image of a document using a camera of a mobile device; classifying the image as an image of a financial document, the classifying further comprising: generating a first representation of the image, the first representation being characterized by a reduced resolution; generating a first feature vector based on the first representation; comparing the first feature vector to a plurality of reference feature matrices; and classifying an object depicted in the image as a member of a particular object class based at least in part on the comparing; determine one or more object features of the object based at least in part on the particular object class; performing optical character recognition (OCR) on the image of the financial document; extracting an identifier of the financial document from the image based at least in part on the OCR; associating the image of the financial document with metadata descriptive of one or more of the financial document and financial information relating to the financial document; and storing the image of the financial document and the associated metadata to a memory of the mobile device. 26. The method as recited in claim 1 , wherein the financial document is a gift card, and the method further comprising: detecting an attempt to initiate a financial transaction, and, in response to detecting the attempt to initiate the financial transaction: extracting the identifier of the gift card from the image based on the classifying, wherein the identifier consists of numerals, and comprises one or more of an account number and a security code; determining the financial document is one or more of an eligible form of payment for the financial transaction and a preferred form of payment for the financial transaction, the determining being based on a plurality of predetermined ranking criteria selected from: an account associated with the financial document having a balance greater than or equal to a value of the financial transaction; the account associated with the financial document having a credit limit greater than or equal to the value of the financial transaction; the account associated with the financial document having an available credit amount greater than or equal to the value of the financial transaction; the account associated with the financial document having an expiration date later than a date the financial transaction attempt is initiated; the account associated with the financial document having associated therewith one or more of a benefit and a reward; identifying data associated with the financial document matching identifying data provided in connection with the attempt to initiate the financial transaction; the financial document having been used to process a prior financial transaction with an entity also corresponding to the attempted financial transaction a frequency of use of some or all of a plurality of financial documents being greater than a minimum frequency of use threshold; the frequency of use of some or all of the plurality of financial documents being less than a maximum frequency of use threshold; a recency of use of some or all of the plurality of financial documents being more than a minimum recency threshold; the recency of use of some or all of the plurality of financial documents being less than a maximum recency threshold; a frequency of use of some or all of the plurality of financial documents in at least one financial transaction between a user and the entity corresponding to the attempted financial transaction; and a recency of use of some or all of the plurality of financial documents in at least one financial transaction between the user and the entity corresponding to the attempted financial transaction; suggesting the preferred form of payment to a user via a display of a mobile device; prompting the user for input relating to the financial transaction; receiving user input relating to the suggestion, and either: designating the preferred form of payment for the financial transaction in response to the user input confirming the suggestion; or designating another form of payment for the financial transaction in response to the user input negating the suggestion.