Profile: Phase IV Engineering, Inc. is a provider of RFID and wireless sensing services & products. We render RFID ASIC MEMs microsystems and active wireless asset visibility electronics. Our SmartStem™ is a wireless pressure and temperature sensor built into the tire's inflation stem that makes the daily tire pressure check quick, easy, accurate and automatically documented. Our wireless sensing nodes can monitor temperature, humidity, or G-shock and trigger alerts. Our tamper evident devices monitor door opening, support authentication and authorization & can transmit security alarms. We are an ISO 9001:2000 certified company.