I'm working on a flow for starting a free trial for a paid product. We're exploring using a phone number (SMS them a code, they enter the code on our site) to validate the user as unique. What are your thoughts on this approach? Are you familiar with products or services that use this? Any that use it with particular success? How would that compare with something like using Facebook authentication?
I've looked on UI Patterns and haven't found examples of the pages to create a new account. The flow steps I currently have is for the new customer to enter basic contact information and then navigate to a second page to enter credit card information - with the option of using the information from the contact page. I am being 'pushed' to combine the contact info. with the credit card info. in the hopes of a higher conversion rate. It will make for a very long page which is a poor experience. Ideally, we'll do some A/B testing but we need to get out the door first.