up until now i dont know if bitcoin can be categorized as currency,,it just commodity without physical like gold..
if bitcoin a currency there there will be a paper bitcoin,,or anything that has physical..
Please correct me if I'm wrong but I've hered that there are some phisical bitcoin coins, but since the value of them are so much (approx. 250 USD now) that it makes people not to use them as normal everyday coins.
Just imagine what is the approx. value of the normal coins you have in your pocket/leather wallet/car's ashtry, is it worth the value of 1 bitcoin coin?
The bitcoin coin is phisical (or will be phisical if I know it wrong), but because of the value of it you would put it into your safe instead of your pocket.
Another question if the bitcoin coin will have smaller coins (change) like cent for EUR or for USD. This could be the satoshi for example