i would like to have your back but mate, who's gonna tell that you "Accidentally" did it with PROOF too?.. so its your fault probs..
It's easy to tell. If they can detect an auto clicker, they could just read the game log. You can look at the log of how much time is in between each click.
Let's say you're setting up an auto clicker with an interval (in MS) of 1000 (1000MS = 1S) for pickpocketing a man.
The log would probably look like this (very rough estimation):
Event: Click NPC: man (Time: 05:45:34) User: anyusername
Event: Click NPC: man (Time: 05:45:35) User: anyusername
Event: Click NPC: man (Time: 05:45:36) User: anyusername
Event: Click NPC: man (Time: 05:45:37) User: anyusername
Event: Click NPC: man (Time: 05:45:38) User: anyusername
Event: Click NPC: man (Time: 05:45:39) User: anyusername
Event: Click NPC: man (Time: 05:45:40) User: anyusername
Event: Click NPC: man (Time: 05:45:41) User: anyusername
If someone would do this for 1 or 2 minutes, the person is intentionally using the auto clicker for gaining XP.
Conclusion: No accident.
Then we have bot clients/scripts. They require time to setup. Any person who would claim to "accidently botted", is lying.
Ask this: "If you were "accidently botting", why did you put effort into setting up a bot client/script?" putting effort into something always comes with a goal in mind.
That goal is "botting" the gain free AFK XP.
Conclusion: No accident.
Now we have players with a game keyboard, an auto click macro bound to his macro key. The auto clicker is set to 100MS. This person would accidently click his macro button and in the log would this been seen:
Event: Click NPC: man (Time: 05:45:34) User: anyusername
Event: Click NPC: man (Time: 05:45:34) User: anyusername
Event: Click NPC: man (Time: 05:45:34) User: anyusername
Event: Click NPC: man (Time: 05:45:34) User: anyusername
Event: Click NPC: man (Time: 05:45:34) User: anyusername
Event: Click NPC: man (Time: 05:45:35) User: anyusername
Event: Click NPC: man (Time: 05:45:35) User: anyusername
Event: Click NPC: man (Time: 05:45:35) User: anyusername
The person presses immediately the macro button againt the stop the auto clicking. Then the button isn't pressed anymore. This would clarify as an "accident".
Conclusion: Accident.