The Digital Mobile Key (DMK) is the National eID solution which allows citizens to electronically authenticate themselves in public and private companies websites and access digital services through their smartphones, tablets or laptops, while also enabling qualified electronic signatures. When authenticating in a website, the citizen should insert a numeric PIN (defined by him/her) and immediately receives a one-time temporary code number in his/her mobile phone (SMS text message), email or twitter account; there’s also a mobile app that allows the citizen to receive the code through a push…

Portugal began developing its digital identity system in 2007, becoming one of the pioneering countries to aggregate in one card 5 different identification numbers and implement digital certificates with its eID ‘Citizen Card’. Since then, the Portuguese government has continuously invested in its eID scheme by launching several secure and easy-to-use mechanisms. In 2014, the country presented the Digital Mobile Key, a mobile solution, spreading its usage to the private sector; extended the eID schemes to include professional attributes (‘SCAP’, 2018); and recently launched the ID.gov app…