Access Control Security Systems can be difficult to put together. What readers are compatible with what Access Control Security System controllers? What access cards are compatible with what readers? Westco can answer your Access Control Security Systems questions for you by putting together a few common access systems for parking applications. At Westco, we try to simplify things for our customers. All of our readers are 100% waterproof and built for outdoor use. All systems are stand alone and on-site programmable.