Non-standard implementation of the creator, how was it done?

Question

C++ / C#

Hello.
Back in 2011-2012, I found a programmer who agreed to implement a mailbox creator program for gmail.
The algorithm of the program was as follows:
1. A browser was opened, a gmail was opened
2. The mouse "went" to the first field, slowly filled everything in the first field
3. Switched to another field and so on until the last
one 4. Clicked on "send data" (well, that is, e. register).
Now my question is: how did you manage to manipulate data from the browser? Indeed, in fact, it is impossible to stupidly set the mouse movement trajectory (more precisely, not optimally) - you need to set the exact coordinates and so on, and there is no portability of the program (it will not work on a different screen resolution either).
And at the same time, it was the tab in the opera that was created, and not some kind of webbrowser. Here, through a webbrowser or some other platform like Awesomium, you can still figure out how to manipulate elements there, select inputs, and so on ... The
question is: how was it possible to create this in 2011-2012?
PS: at the same time, the program was able to reboot my modem through the web interface to change the IP address))

Answer 1

He may have done it with Selenium .