Unlike other extensions, this one does not only track the total amount of time spent on limited websites: it also tries to decrease the number of times the user can access them every day.
The user can set 3 parameters: the list of websites they want to track, the number of times (aka shot) they can access them per day (3 by default) and the amount of time they can spend on the website every time they access it (6 minutes by default).
Every time they try to access a tracked website, the website is blocked by an overlay showing the number of remaining shots for the day (hence the code injection). They can start a shot, at the end of which the website is blocked again.
