Parking garages are run using a combination of security systems to control access and POs systems to process payments. As these systems are typically located at a distance from any type of network or Internet connection, there are basically two options for implementation. The first, which can be expensive and potentially unreliable, is via a completely wireless system. The second is by creating a wired connection between the devices in the system and a nearby network. Using Serial Device Servers is an economical and easy way to make this connection, because it does not require an actual PC workstation at the remote location in order to implement or monitor and service the devices.

The pictures and diagram below show different aspects of a Parking garage access control system. At the entrance to the garage, the driver has a choice of either taking a ticket from the machine or inserting a prepaid access card. In the former case, once the ticket is removed from the machine, a signal is sent to raise the control gate. In the latter case, the card reader transmits the card data to the remote server which either validates or rejects the card. If validated, then a signal is sent to raise the control gate. All of these serial devices are connected to the network via the Serial Device Server located in the Control Booth. Along with the external devices, a POs terminal for processing payment upon exit and a Debit Display monitor are also connected to the Serial Device Server. That SDS is connected via Ethernet to the closest network access point. The cables used to connect these devices can be run externally, or they can be embedded in the ground and tucked into walls during construction of the access gate.

This system not only makes connectivity simple, it provides the ability to remotely monitor the garage from any location. For instance, if a gate control malfunctions, a software problem can be fixed from any Internet location--a technician needn't go to the garage to make repairs. In addition, the number of people entering and leaving, the specific access cards used, average time spent in the garage, and a real-time total of receipts, can all be remotely monitored.

Other Access Control Applications:

• Biometric identification and controlled entry
  
  
• Security camera monitoring and control
  
  
• Security door control and entry logging
  
  
• RFID Parking and Vehicle Area Access and Control
  
  
• Automated Pre-Paid Parking Lot Systems
  
  
• Airport Security Ticketing and Logistics