Actually Gomez, through using treats you can train a cat to leave you alone, I've done it with my own as she simply loves sitting between me and my PC when I'm on it.
I trained her by placing a treat next to me every time she went to her usual position, she'd move and eat the treat, I'd praise her and give her another treat. Rinse and repeat as often as necessary 'till she gets the idea and doesn't go where you don't want her to.