Ticket Stamping

[2Funki4Wheelz]

This is ocassionally happening but for some reason in Heuston it's always the same checker guy (nice tattoos), no one else does it.

I'm asking for a decent explanation the next time - I know they have every right to inspect my ticket - I wonder if the stamping is for IE so they know it's a kosher ticket?

If so, I'm sure the fraudsters can come up with a bit of purple ink and a date stamp.