User Registration

SketchSystems.spec

User Registration
  User enters phone number -> Send authentication SMS
  
  Send authentication SMS
    User taps authentication link -> Prove checks mobile identity
    
  Prove checks mobile identity
    User is valid -> Registration complete
    User is invalid -> Error message
    
  Error message
    User enters phone number -> Send authentication SMS
    User exits registration -> Exit app
    
Registration complete
Exit app

SketchSystems_prototype.js

function render(model){
  let current_state_name = model.active_states[0].name;
  return $("h1",
           {style: {color: "darkBlue"}},
           `The current state is: ${current_state_name}`);
}