Abstract: In one embodiment, a computer-implemented electronic commerce transaction method. The computer receives original image data from a user device, associates a security token with the user, embeds the security token into the original image data to generate modified image data, and provides the modified image data to the user device. To authorize a financial transaction that uses personal data of the user, the computer subsequently receives the modified image data from the user device, extracts the security token from the modified image data, and validates the user and/or the user device.

Abstract: In one embodiment, a computer-implemented method for extending functionality of a browser text-entry field, e.g., via a browser add-on or extension. The method includes: (a) the computer monitoring the browser text-entry field to detect a predetermined initial combination of characters in a query entered by a user; and (b) if the predetermined initial combination of characters is detected in the query, then: (i) the computer detecting the remaining characters in the query; and (ii) the computer providing, to a software routine, the remaining characters in the query. The software routine is selected based on the initial combination of characters and may be a messaging routine that sends a message to an identified user or user account (e.g., SMS, phone call, social media), or an electronic commerce routine that sends identification of one or more offerings to the identified merchant or merchant account to initiate a purchase.