I've just been asked to build an iphone app that presents some typical static content. However, some content is locked until the user takes the phone and scans an image of a logo that belongs to client's company. If the scanned logo is valid, then the app unlocks more information to the content.
I haven't done any image recognition apps before. Can someone tell me if
a) is it a trivial to implement (ie. just a few days) or is it substantial (ie. a few weeks)
b) which image recognition library to consider given that the current project is fairly small (just 4-5 screens of read-only content).