Board Thread:Off Topic/@comment-26397825-20160116042403/@comment-26397825-20160201055018

I feel like they shouldn't be able to differentiate between someone wearing really thick shoes and something non-living standing on the ground, but that I also realise that heartbeats are a thing and the pulsing of your blood rushing around your body technically sends out undetectable minute vibrations.

However, friend/foe differentiation should definately not be a thing. I also feel like Grimm should only be recognisable because they're not living in the same sense that we are and therefore would produce different vibrations.

Range limit could be a 15m radius centred on the user? It would increase with practise, but that sounds like a good start point to me.