A question about entering a dungeon for free.

Accidentally, I discovered that I can enter a dungeon by simply following someone who has already used a key to enter, without joining their party or paying for the key. I'm afraid that this might be against the rules. Is it a violation?

 

nope that's intentional. keys can allow everyone in a dungeon for 60 seconds iirc

 

So, can I understand it as long as someone has given the key, anyone can enter within 60 seconds without breaking the game rules?

 

one key will allow up to 4 people to enter within 60 seconds of it being used.

 

I understand, thank you