We will be releasing a site for our client, one of the question I am trying to answer is "How do I know they are who they say they are?".
There are various ideas I have in mind in order to tackle question. At the same time, I do not want to put so much security constraint that it becomes cumbersome for clients to register and use the site for their benefit.
I am interested on hearing from anyone who has good suggestions or have implemented something of this sort.