Detecting bots

Hi,

Is there any way to detect bots or robots? I have somwhere read that you can do it by looking if the mouse is moving. But if on a mobile phone there is no mouse movement so that is not really a good option.

I want to create some sort of a counter. So if a certain link is pressed it should count +1 but not so for bots.

Any way to prevent bots from the counting? Thanks in advance.