http://news.scotsman.com/scotland.cfm?id=2316172005
"TWO people have been charged with spitting on rail staff after being identified by their DNA. The latest arrests mean four passengers have now been arrested and charged in connection with spitting attacks in the Lothians over the last 18 months.
Special 'spit kits' were handed out to frontline First ScotRail employees so they could secure evidence and help to trace offenders. "
