The Response format can be either JSON or XML.
The clients accessing the Service(s) will be web browsers, IPhones, Android Phones, all kinds of smart phones and other types of devices.
The username and password for the users will be stored in a sql server database.
I can't pass the username and password in the UriTemplate.
There will be SSL.
If there is anything else you would like to know in order to help you help me, just ask?