How send token with Passport-VKontakte (social auth)?

In my app works auth VK, but for understand who is site visitor, need send him token while he click auth vk. How send token to user with passport-vkontakte?

app.get('/auth/vk',
  passport.authenticate('vkontakte'),
  function(req, res){

});

app.get('/auth/vk/callback',
  passport.authenticate('vkontakte', {
    failureRedirect: '/auth/vk',
    successRedirect: '/'
  })
);

p.s: doc https://github.com/stevebest/passport-vkontakte

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