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...