A compressor has a compression unit for compressing gas to a desired pressure, a drive shaft and a balancer. The input stage is operable to receive a digital bit of data, to convert the digital bit into a quasi-differential current, and to convert the quasi-differential current into a first voltage using a load that is comprised of transconductance and resistance. The service provider stores the image in a computing system, extracts the vehicle identifier from the stored image, and associates the vehicle identifier with a location identifier corresponding to a location where the key is stored. The storage chamber being positioned within the pad base member.