This was one of my first nightmare scenarios. When "How Bad is My Batch" came out with the ability to online track the codes, it seemed closer. Now here it is. I would add, this in addition to the various storage circumstances. Some had specific cooling or temperature constants. So we are lab rats, and we told the man no.

There is also the possibility of a two stage delivery. IE, you take the corresponding lot number that responds to say 6G and your terminated. Or what about the IEM numbers showing up locating the dead in cemetaries or walking around live. I'm sure they can track, trace and eliminate. . . I'L BE BACK ! (BOVK)

edit: Lastly, imagine Congress going into 'the room' to get their jab being told, 'don't worry, its saline'. They know that they can be terminated at any moment, fall over dead or maybe 'influenced'. What a movie.