Not just spain its accross europe 1 of the lads i work with was in bulgaria and this happened to him luckly he had read about this before going and wasnt fooled just kept walking away from the guy asking for his id he walked back to busy part of town and the copper quickly fooked off as he didnt want a sceen on a busy street incase the real police turned up. Sneeky fuckers and you can see why they get away with it cause you realy dont want to get in to an arguement with spanish/greek/what ever police their all seem to be quite quick to want to start a bit of