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...