The MFF2 UICC embedded SIM used on the Blues Wireless Notecard works in the same manner as a traditional SIM card. However, it is soldered directly onto the Notecard circuit board during manufacturing. This makes the Notecard a perfect option for IoT deployments that are located outdoors (the SIM is protected from corrosion), are in motion (the SIM won’t move out of place), or require a long lifecycle. MFF2 SIM cards are also permanently installed, making them impervious to misuse and therefore more secure.