I use Wordpress as an address directory. The addresses are stored as posts. Now I would like to give the address "owner" the possibility to update his address without having to register an account on my Wordpress.
Is it basically possible to build a Gravity form, which populates its fields with data from an existing post and updates this posts data by submitting the form? The form sould have two pages/steps: the first with the post fields and populated with post data, the second will show only an input field in which the user has to enter an authentication code which was sent via SMS to his cell phone.
If it's possible can you give me some tipps how to do it.