thedqs wrote:It would be possible to verify if someone has an account with the church by passing through the church username and password and seeing if it successfully logged into the site. Problem is that no one should give out that information anyway.
Verifying that someone is a member through a web service can be beneficial (like a LDS only networking site) but also potentially abusive as mentioned by Russell where one can start harvesting this information for their own purposes.
Best way (and probably the only way) is to see if the church will host your idea. You can start by explaining your idea here if possible.
Current Church policy is that sites should not ask users to enter in their account information (username/password/membership #/etc) even if they want to pass it through to lds.org. The problems are obvious. Malicious sites could crop up.
The idea of having an API or web service program can access through some federated security approach is a project we are exploring now. Until then, there is no way to do it.
Current Church policy also asks that people do not create web sites for official Church work. For example, ward web sites, etc. However there is no limitation on creating web sites for personal use (for example, dating sites, user groups, etc) as long as local units do not promote such sites.
Tom