Taking advantage of the rise in mobile photography, Pinterest says its image-discovery app in coming months will let users point their smartphone cameras at something, and the app instantly will search within its vast online showroom of 75 billion images for a visually similar match of the items in the photo.

This idea has been around for a long time, but the technology has never really been there to allow it to succeed. Honestly, I’m still not sure it’s there, completely. It’ll be interesting to see how Pinterest tackles all of the little problems involved in making this work.