Amanda Ripley using a Maintenance Jack to open a door locked with Security Braces in Aliens: Isolation.

Security Braces are magnetic locks that attach to doors in Alien: Isolation

Were placed in by station security to protect station inhabitants from the Xenomorph and other threats.

You need a Maintenance Jack to open such doors. The Maintenance Jack can be found at the Evidence Lock-Up room at the Spaceflight Terminal level of the Sevastopol Station