1. A two stage method for logging a first user in to a mobile computing device being in a locked mode, said method comprising: (a) storing data associated with the first user and storing information that relates to a facial image of that first user, at a memory of the mobile computing device; (b) when the mobile computing device is in a locked mode: (b.1) receiving data inserted by a user who wishes to unlock the mobile computing device; (b.2) comparing the received data with the stored data associated with the first user and determining whether the received data matches the stored data associated with the first user; (b.3) if it has been determined that the received data matches the stored data associated with the first user, prompting an image capturing device associated with the mobile computing device to capture a facial image of the user who inserted the data received; (b.4) retrieving information that relates to a facial image of the user who inserted the received data and comparing that information with information that had been stored at the memory of the mobile computing device, wherein the latter information relates to the facial image of that first user; (c) if the retrieved information relating to a facial image of the user who inserted the received data matches the information relating to the facial image of the first user which has been stored at the memory of the mobile computing device, unlocking the mobile computing device.