Service Electronic locking systems Digital cylinders are the new generation of lock cylinders, with built-in electronics that can communicate with the key. The benefits are many, for example, lost keys can be easily locked, given timed access or temporary authorization. We companies within Prosero are market leaders in electronic locking systems and provide a comprehensive product range. Prosero is a Nordic leader in technical security. We combine the local presence and entrepreneurship with the strength of Nordic best practice, the small company's speed with the large group's competence, security and development power. Prosero Security Group