Don't carry serious cash on you, and if possible leave your personal documents at home. I know it's not quite 'preventing' per se, but at least it softens the blow.
I was mugged in a tram about 5 or 6 years ago, but the guy actually had a knife on him and a couple of buds to help out if things got serious. I was with a friend, so there was really nothing we could do about it. I had one of those really shitty phones at the time, you know, the old bricks, so he took that, and if I'm not mistaken a 5-ver I had on me and my pack of cigs. I didn't carry a wallet at the time, so I guess that was a stroke of luck, 'cause I've heard those assholes usually take everything.
Another good precaution for your debit/credit cards is to wipe out those numbers at the back, which would allow him access were he to want to transfer the money online or something. That basically renders the card useless, unless he actually makes you go and withdraw money from an ATM.
I don't know what the right thing to do would be in those situations, I guess you get the urge to fight the dude, and you could, like in your case if he's alone and it's not sure he's got a gun and if you outnumber him... Running is also an option; I doubt he'd risk pulling out the gun and shoot you in public.
I was mugged in a tram about 5 or 6 years ago, but the guy actually had a knife on him and a couple of buds to help out if things got serious. I was with a friend, so there was really nothing we could do about it. I had one of those really shitty phones at the time, you know, the old bricks, so he took that, and if I'm not mistaken a 5-ver I had on me and my pack of cigs. I didn't carry a wallet at the time, so I guess that was a stroke of luck, 'cause I've heard those assholes usually take everything.
Another good precaution for your debit/credit cards is to wipe out those numbers at the back, which would allow him access were he to want to transfer the money online or something. That basically renders the card useless, unless he actually makes you go and withdraw money from an ATM.
I don't know what the right thing to do would be in those situations, I guess you get the urge to fight the dude, and you could, like in your case if he's alone and it's not sure he's got a gun and if you outnumber him... Running is also an option; I doubt he'd risk pulling out the gun and shoot you in public.