----- BROWSER -------
------- USER NORMAL -------
console.log(window.localStorage.getItem("user"))
 {"image":"https://scontent.xx.fbcdn.net/hprofile-xfa1/v/l/t1.0-1/c0.0.50.50/p50x50/31…016898341_1083083452_n.jpg?oh=29f1c127a4a480fd1a6e9d2981983895&oe=56962185","user_id":"893479594077576","name":"Filipe Oliveira","email":"filipe.jtoliveira@gmail.com","type":"Facebook","last_Login":"2015-09-29T22:45:56.204Z"}

console.log(typeof window.localStorage.getItem("user"));
string

app.js:122 ------- USER STRINFGY -------
console.log(JSON.stringify(window.localStorage.getItem("user")));

"{\"image\":\"https://scontent.xx.fbcdn.net/hprofile-xfa1/v/l/t1.0-1/c0.0.50.50/p50x50/31…16898341_1083083452_n.jpg?oh=29f1c127a4a480fd1a6e9d2981983895&oe=56962185\",\"user_id\":\"893479594077576\",\"name\":\"Filipe Oliveira\",\"email\":\"filipe.jtoliveira@gmail.com\",\"type\":\"Facebook\",\"last_Login\":\"2015-09-29T22:45:56.204Z\"}"

console.log(typeof JSON.stringify(window.localStorage.getItem("user")));
string

---- Funcionando no browser ----

JSON.parse(window.localStorage.getItem("user"));
type Object
{image: "https://scontent.xx.fbcdn.net/hprofile-xfa1/v/l/t1…g?oh=29f1c127a4a480fd1a6e9d2981983895&oe=56962185", user_id: "893479594077576", name: "Filipe Oliveira", email: "filipe.jtoliveira@gmail.com", type: "Facebook"…}


----------- DEVICE ---------------

------- USER NORMAL -------
window.localStorage.getItem("user)

Objeto
typeof: String

------- USER STRINGIFY -------
Json.stringify(window.localStorage.getItem("user"))

Object
typeof: String