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???
08/26/04 07:59
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 		 #76435 - RE: how to detect iButtons on the 1-Wire net
Responding to: ???'s previous message

As described in the Dallas (Maxim) documentation - they generate a reset pulse - thus it is easy to detect which reader has a button touched on it. After getting this reset pulse, your software can read the device.

Also, security wise, it is easy to duplicate a one wire device with a little 8 pin micro. Smart card with crypto is much more secure.

List of 29 messages in thread
TopicAuthorDate
iButtons interfacing            01/01/70 00:00      
   RE: iButtons interfacing            01/01/70 00:00      
      RE: iButtons interfacing            01/01/70 00:00      
   READ THIS FIRST!            01/01/70 00:00      
      RE: READ THIS FIRST!            01/01/70 00:00      
   RE: iButtons interfacing            01/01/70 00:00      
      RE: iButtons interfacing            01/01/70 00:00      
      RE: iButtons security            01/01/70 00:00      
         RE: iButtons security            01/01/70 00:00      
            RE: cost of security            01/01/70 00:00      
               RE: cost of security            01/01/70 00:00      
                  RE: cost of security            01/01/70 00:00      
                     RE: cost of security            01/01/70 00:00      
                  RE: Parasite Power            01/01/70 00:00      
            general security            01/01/70 00:00      
   how to detect iButtons on the 1-Wire net            01/01/70 00:00      
      RE: how to detect iButtons on the 1-Wire net            01/01/70 00:00      
         RE: how to detect iButtons on the 1-Wire net            01/01/70 00:00      
            You need a 1-Wire per reader            01/01/70 00:00      
            RE: how to detect iButtons on the 1-Wire net            01/01/70 00:00      
         RE: How Secure?            01/01/70 00:00      
            RE: How Secure?            01/01/70 00:00      
               Straying way off-topic...            01/01/70 00:00      
                  RE: Straying way off-topic...            01/01/70 00:00      
                     Far, far away...            01/01/70 00:00      
                     RE: Straying way off-topic...            01/01/70 00:00      
                  RE: Straying way off-topic...            01/01/70 00:00      
                     Oh dear, oh dear...!            01/01/70 00:00      
                        RE: Oh dear, oh dear...!            01/01/70 00:00      

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