Whenever I power up the Protectrons in the College Square Station subway (in 'Subway Steward' mode), they ask me for my token. If I attempt to show them my subway tokens however, they immediately try and kill me..

I have tried

• Interacting with them ('Talk' action)
• Dropping a Subway Token and dangling it in front of them (still had some in my bag as well)
• Standing still and not doing anything (this is what worked in Fallout 3, they would take a ticket/employee ID/other important McGuffin etc off you after a few seconds)

Every action ends up with them attacking me for my 'delinquent behaviour', apparently blaming me for the detritus, graffiti and dead bodies lying everywhere.

How can I safely activate Subway Protectrons?