App to locate the position of a book on shelf?

My son has 100s of books on his shelves. I want to locate a particular book. I'm certain of the name, and certain that the name is on the spine.

It seems feasible to have an app where you can:

1. Enter some text you want to search for.

2. Scan some shelves by waving your phone around.

3. See a still photo with the matching book(s) highlighted.

Do you know of such an app?

I know I could take some photos of the shelves, transfer them to my computer, use OCR and save them as a searchable PDF, but it seems like more effort than it should be.