Plugin below is one of the most powerful platforms which enables to hide any part of your blog post based on paid access. Instead of hidden content user will see an SMS payment instruction to access the page. User sends an SMS, receives a password which must be entered to access the content. You can set up this plugin in Admin panel.
You decide for how long given password can be used to access the hidden content. All SMS in real time mode are transferred to your server and saved in a table, entered password validation occurs locally on your server. Plugin designed for platform version 4.0.8 and higher.
Click here for Demo