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...