Oh, yes! I'm sorry about that, I should throw that in the Glossary now. There was an event early-on in game where the Masked came in droves and would capture characters (at the player's will) and insert a tracking chip into their body.

Characters brought into game after that will not be chipped! (That's not to say the opportunity will not arise again...) However, if you're interested in having the heavier effect of the hallucinogen on your character, you could totally have them do so from eating more of the food/drinking more of the water than others.