Put facebook login functionality in contact form 7

I want my visitors to be able to subscribe to my blog using facebook.

I currently have a contact form 7 form on my subscribe page, sending me the information via email. I strip the info with Gammadyne Mailer and populate an Access database with it. I use the email info to send new post and other announcements to subscribers.

** Is there a plugin that generates a shortcode to allow a facebook login button to be placed in my contact form 7 form?

I would like some means of collecting the facebook login / contact info in my local database.

My blog is at https://www.activelightphotography.com/blog.

Thanks.