The Toyota Matrix, officially referred to as the Toyota Corolla Matrix, is a compact hatchback and derived from the Toyota Corolla. Some model years of the Toyota Matrix have keyless entry remote fob smart keys that are onboard programmable, which means a person can program the keyless entry remote fob smart key with no special equipment, while other model years are not on-board programmable and require special equipment in order to program the keyless entry remote fob smart key.