We'd like to use LS for an event registration form.
In the end message, we'd display a barcode generated from survey and unique response ID. The attendee would then print the end page and bring that to the event.
What we'd like to do is have an Android app that will scan the barcode, and call back to LS (presumably via the API), and update within the associated response, a hidden survey question called "Attended" (for example).
First off, (a) is there a mechanism in the API to accomplish this, and (b) if you're reading this, and do Android app development and (a) is possible, I'd be interested in exploring the investment to accomplish this.