there  was a crowdsourced vaccine,   
  that could  be created regionally by  
    most   pharmaceutical   companies   
   without  much  effort,  and it was   
   estimated  that   it   had  saved    
       tens      of     millions.       
                                        
 but it was not officially recognized  by 
 the  world  health organization, and  as 
 such  did not give what  the  sanctioned 
 (and   unobtainable)   ones   did:   the 
 subskin  chip that  would let you  enter 
      (or     leave)      cities.       
                                        
  and that's why, eventually, we would  
   create  our  own chips.  they were   
  larger than the official ones, and a  
    little  unstable,   and   needed    
   maintenance.  but   they  worked!    
  or, they  would work together with a  
  little something to  make  the guard  
      look    the    other    way.      
                                      
                                      
                                          
    but the scanner showed green, so...