Mine at least is linked into the rest of the car - it sense weight on the seat and I think it's only active when the key is in. Obviously it wouldn't be coded

Mine at least is linked into the rest of the car - it sense weight on the seat and I think it's only active when the key is in. Obviously it wouldn't be coded fire only if you were braking ! But it might be at least logging all the data that is used for the seat belt pre-tensioning, ABS, stability control, traction control and all the other safety systems.