It's an Angular Factory with $fakeStorage fallback. LocalStorage is not working in Safari, then we create a session storage in a local variable. Take care about the data you save on it, remember that it's a local variable.

localStorageFallback.js

angular.module('myApp.factories', [])
.factory('$fakeStorage', [
	function(){
		function FakeStorage() {};
		FakeStorage.prototype.setItem = function (key, value) {
			this[key] = value;
		};
		FakeStorage.prototype.getItem = function (key) {
			return typeof this[key] == 'undefined' ? null : this[key];
		}
		FakeStorage.prototype.removeItem = function (key) {
			this[key] = undefined;
		};
		FakeStorage.prototype.clear = function(){
			for (var key in this) {
				if( this.hasOwnProperty(key) )
				{
					this.removeItem(key);
				}
			}
		};
		FakeStorage.prototype.key = function(index){
			return Object.keys(this)[index];
		};
		return new FakeStorage();
	}
])
.factory('$localstorage', [
	'$window', '$fakeStorage',
	function($window, $fakeStorage) {
		function isStorageSupported(storageName) 
		{
			var testKey = 'test',
				storage = $window[storageName];
			try
			{
				storage.setItem(testKey, '1');
				storage.removeItem(testKey);
				return true;
			} 
			catch (error) 
			{
				return false;
			}
		}
		var storage = isStorageSupported('localStorage') ? $window.localStorage : $fakeStorage;
		return {
			set: function(key, value) {
				storage.setItem(key, value);
			},
			get: function(key, defaultValue) {
				return storage.getItem(key) || defaultValue;
			},
			setObject: function(key, value) {
				storage.setItem(key, JSON.stringify(value));
			},
			getObject: function(key) {
				return JSON.parse(storage.getItem(key) || '{}');
			},
			remove: function(key){
				storage.removeItem(key);
			},
			clear: function() {
				storage.clear();
			},
			key: function(index){
				storage.key(index);
			}
		}
	}
]);

Thanks for this.