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...