This EEZ Reader is designed to decode the modified Ford 10 Wafer lock system. This system first appeared in 1991 on many Escort and Tracer models. Unlike the standard 10 wafer system, this does not use the first 3 spaces on any lock in the vehicle. Although, a factory original key will have all 10 cuts, you do not need these spaces to operate the locks. The code series, furthermore, has not changed.