How to know which site are running my module?

Question

I am about to sell a module that I coded for e-commerce websites, and I was wondering if it's possible, to insert some extra code in it in order to know which websites are running the module. In other words, let's say a customer buys my module, then install it on its website, is there a way for me to know which website it is?

I don't want any other info than "which website", my goal is not to trace users, but simply to have a statistic of the number of websites where my module is installed (because, it can be for instance that a customer buy the module then install it on several other websites...)

Thanks for your help

Aymeric

Answer 1

Difficult to answer without knowing what you are running, PHP, JS, etc. but when I created a similar plugin for WordPress there are some hooks for when a plugin is activated/deactivated. I just put an HTTP call into my API that told me when someone activated or deactivated the plugin and I got a rough idea. I mean, if they don't deactivate it properly, eg delete the files, then you would get a false positive of them using it, but not many folk do that.