Indonesians tend to prefer standing at least arms lengths from one another. When conversing with friends and close acquaintances this distance is a bit shorter

Amongst friends and close acquaintances of the same sex, there is a decent amount touching during conversation.  

There is almost no touching between men and women while conversing. 

Kissing and hugging in public is to be avoided at all costs.

Indonesians tend to stand close to each other, especially in public places. So when you are queuing and can feel the person behind you breathing on to your neck, it is not meant to be rude.

Women tend to hold hands with each other but this is not a romantic gesture.

It's advisable to avoid touching between opposite sexes (like hand on shoulders) unless they initiate first.