Home Automation

Entry Automation

RFID

Pros

• Hands-off access
• Hands-off tracking of access
  • As long as user has their RFID tag on them, their presence within a certain proximity around the reader will be recorded.

Cons

• Keys easily stolen with anonymity

Implementation

Materials

• Need a reader with good range. Can be found for under $100
• To build a system that can perform coming/going detection, would need two readers. or 1 + N readers, where N is the number of approachable directions
• Need a writer. Under $100
  • Some writers are substantially more expensive. Q: Why the price difference?
• Need a server
• Need an UPS for the server
• Need a deadbolt actuator that can be overridden standard metal key

iButton

Pros

• Rotating keys are available
• Someone must have physical access to the fob to capture the non-rotating key

Cons

• Hands-on access
• 1 wire interface may be fakable with any interface that has the same signal levels (very cheap and easy buttonforging)
• User may forget to log their entry to the area.
  • If door is open, no incentive to use key
  • Group of people walk in at once
  • Someone knocks and has the door opened for them
  • All these Cons are valid for any system --Korc 19:26, 8 May 2008 (CDT)