By installing the Microsoft Authenticator App on your cell phone or linking your cell phone number to your Microsoft account, you can add an additional layer of security to prevent unauthorised access to your Internet accounts, even if the other person has your password. This is achieved by a random code that is sent to your cell phone or emailed to you, which has to be verified by you during any login attempt. In short, it means that you will require two separate forms of identification (a password and a code sent to you – or even your fingerprint) to access specific data, platforms or programmes.