In fairy tale, the thief leader faced huge Shek Mun Door and said "Open Sesame", then the door open automatically. We were all amazed at the magic spell while nowadays it becomes a reality. That is the automatic doors.
Owing to the automation technology, we control the door slowly.
Automatic doors can be controlled by a variety of ways, such as voice-activated door, open the door, fully automated fingerprint identification door and no other authentication mechanism. These are the practical application of auto-sensing technology. This sensor technology is based on a number of inductive sensor made of when the sensor information is received, the appropriate enforcement agency began to run, so you can complete some predetermined function. Auto-sensing technology, while technology is simple, but it is widely used.