Microsoft has a very interesting set of tools under the Cognitive Services brand, all in the areas of Artificial Intelligence and Machine Learning, one that has particularly caught my eye is the Custom Vision API. This tool allows you to "easily customize your own state-of-the-art computer vision models that fit perfectly with your unique data case. Just bring a few examples of labeled images and let Custom Vision do the hard work".

This sounds like a promising, easy to implement service, and it really is, but either way, this post will guide you through the steps necessary to get your own Xamarin app connected to your own Custom Vision API.