OAuth is certainly a buzzword, and for good reason. It solves (and even better, outsources!) several verification issues. What isn’t talked about as fondly is its implemention. The first step remains the same however: conceptualization.
The very first thing a new application wants to know is “are you YOU?” and god willing, you are. The next issue is determining that in a way that does not alienate the client, pushing them to a different service. There have always been ways to identify, but OAuth attempts to marry the ideas of non-obtrusion and genuine authentication.co