The Target Detector, also known as the TDD, is a weapon attachment developed during the War of 2020. It is a gadget built from motion sensory equipment from the MTN-55 and T-UGS that can can be used to detect enemies in front of the user.
— Battlelog description
When equipped, the Target Detector will fill the Accessory slot of the weapon, and will remain passive when the player is firing from the hip. When the player aims down sight, however, the device will become active and will automatically spot enemy players within a cone in front of the player.
- The Target Detector's description is the only time in Battlefield 4 that the Motion Sensor is called by its actual designation of MTN-55.
- Like much of the new equipment in Final Stand, the Target Detector was renamed after the initial pre-release on the Community Test Environment, originally being named the TDD.
- The attachment functions similarly to the Sniper Spotting Scope from Battlefield: Bad Company 2.