Open Authentication means an authentication system which will allow users to share their private resources in a site without using their user name and password. The requests are received from all types of devices to a remote application or web service for processing of information.
Nowadays requests are not only from standard computers but also from many types of mobile devices like smart cards, mobile phones, laptops etc. So, using Open Authentication can make these devices strong authentication devices.
What is the need for Oauth?
If it is possible to implement an authentication protocol for less than $10 then it will reduce the possibility of credit card fraud, it can reduce the cost of merchants, card associations and finally consumers.
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