How I can make the application to check the subscription of my developed module is active or not.
To explain in detail: I want to develop an application to which customers will subscribe yearly basis. So as long as they pay yearly fees, they can use it. Or it will not log in. or something like that - you advise.
Applications are sometimes on the customer’s server and I will not have control over it. I could make php code to check a file or DB entry at my server which the application will always check while login in. But the customer’s smart IT person can alter it as it is open source.
Please advise any other ideas.
Thanks and Regards,
Ahsan