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...