The document describes portable, self-contained turnstile and guardhouse units that provide secure access entry and exit. The units are fabricated using standard shipping containers in 20' or 40' lengths and can house a guard booth with HVAC, lighting, and computer/phone connections. A variety of automatic identification systems for added security, such as card readers, metal detectors, and biometric scanners, can be installed. The units can also provide secure vehicle access and are available for purchase or rent, delivered to customer sites.