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...