I have been thinking about the need for something like this, but a bit more menu-like. Suppose I am running a high-security site that needs more than 2 factors? Shouldn't that be as easy to set up as 1 or 2? So I image having a bunch of fields, any number of which may be required or optional:

- Real Name (if you can verify against public records that might be worth something) - account name - mailing address - home address - phone#1 [voice? text?] - phone#2 [voice? text?] - question #1 - question #2 - question #3 - select an anti-spoofing graphic - RSA key -...

Some levels of security, such as RSA key may be worth paying extra.

It would be particularly sweet if you provided a simple UI (checklist as above) that writes working client code for me. Oneall.com does something like this.

Overall though I have a few impressions: - Not a good color scheme; doesn't sell it. I say this as a non-visual person. - Include a bundle of sample code, and some docs with diagrams showing the flow of typical use. Yes, we can figure it out with a minimal explanation but your business model is making it super-easy to do what we could do on our own. - I think your site (due to the nature of the problem space) may benefit greatly from iterative A/B testing. - I like the domain / service name. I would actually remember that. I think it would be worthwhile to partner with a good site designer.