Electro-Magnetic Remapping (EMR) is a technology SCUF created to allow a gamer to reprogram the back paddles to most face buttons (X, O, Triangle, Square, Left Dpad, Right Dpad, Left thumbstick down, Right thumbstick down) with the use of the SCUF EMR Mag Key (included with the purchase of EMR).
This is an optional technology that must be purchased during the design phase of a controller. If not selected as an option, paddles will not be re-programmable and the configuration of the SCUF Infinity4PS PRO paddles will be locked to X on the left and O on the right.