Is bus fine going to effect my visa or passport?

Hello
I'm an Erasmus student in Poland. I was travelling around the Poland and I was at Krakow. I wanted to use tram and I bought a ticket. But I didn't know it's not enough in the Poland. Ticket controllers came to me and they wanted to see my ticket. I showed him but they said that's not enough you need to validate it. I said show me and they said that's too late for this. They said I need to pay for 120 zlotys and they wanted my passport. I paid over there with card. And I got my passport back. Is this going to effect my passport or my visa? Will it be a problem when I go back to my country?

No it's all good. No way of knowing if they were real ticket inspectors anyway.

What? Are there such people like that in Poland?

Did they give you a reciept from that handheld device?If they did then its all legal and YES those kind of things had happened before in Poland.

If everybody else was treating them normally they should be legit... (Polish passengers don't stay silent if they thing something's going on).

And getting busted for riding 'na gapę' (without a ticket) won't affect anything in any way....