What recognition-based search apps are there?
A list of "recognitaion based search tools" can be found at searchresearch1.blogspot.de
Some examples:
WhatTheFont Identifies the font in which a given text is set in an image.
IdMyPill Identify a pill from a photo taken of it.
Meal Snap Analyzes your meal to determine your caloric / health consequence of eating everything on your plate.
Deutschsprachige Science Fiction
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