Bidirectional high-security cylindrical compass with curved motor-driven gate. Painted steel and AISI 304 stainless steel structure with 4+4 mm laminated glass (optional bullet-proof glass) and 4+4 mm laminated glass gate (optional bullet-proof glass). The passage cell, closed at the top, is between two open columns to facilitate installation between two walls. In the side buffers there are passage indicators. Inside there is a presence and weight detector as standard for verifying the person's actual passage. In an emergency, the gate can be moved by hand. During power outage, the gate can be moved by hand or, optionally, remain locked.