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...