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Connection java with the the time attendance machine in network  RSS feed

 
Nikki Ayyad
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Hi,
I'm working in project, my theme is to develop an application management system for fingerprint and RFID card attendance machine in java programming language.
My problem i didn't find documentation in java for connecting with this device.
The same problem of Ganesh Pat
Thank You
 
Dave Tolls
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Presumably the device has some documentation?
If it does then you need to read through that and find out what structure it uses for messaging to whatever it is attached to (in your case, the machine your Java app is running on).
Java can then listen to the port the device is plugged into and read events off it (what classes as an event will be documented by the device, not Java).
 
Nikki Ayyad
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Hi, thank you for this answer.
I didn't get any documentation about the device just a catalogue contains some information on how to use it : keyboard, how to put the finger on the sensor ... the use case in general. nothing about the SDK or the architect and fonctionnalies of the machine
best regards
 
Dave Tolls
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Well, how is this machine connected to the (presumably) computer your Java app is going to run on?
 
Nikki Ayyad
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This is the big problem, for now. I connected the machine with the computer using TCP/IP connection. I tested the ' ping ' it works. Now i'm looking for a technic to manipulate the machine ( connection retrieve, and store data ...). I already tested to work with sockets in Java considuring the machine as the server and i triyed to connect to it and retrieve data but it doesn't work. it's complicated and when i asked about the problem i get some information: it is necessary to use a SDK.
best regards
 
Paul Clapham
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Trying to guess how the machine might be connected to the outside world is a hopeless task. You could spend months poking around and trying to reverse engineer it. you should try harder to find its documentation. If somebody told you to use a SDK, and that somebody is somebody who should know the answer, then start investigating that SDK.
 
Dave Tolls
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OK, so it's not physically connected (as in USB or serial or whatever).
Then you (as Paul says) need the documentation that explains how to interact with this machine.
Without it you're stuffed.

Years ago I had to write some code to listen to an ID card reader. If I hadn't had the protocol to work from (that is, what each byte sent on a card event meant) then I would have been unable to do anything. As it was, it was being sent in the reverse order I expected, but at least I had something to work from.
 
Nikki Ayyad
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Thank You Paul Clapham.
Yeah, I agree with You, Dave Tolls, documentation is everything. I must learn about the machine. I spent so much time looking for it. but there is no idea about this machine: I get a CD that contains how to use it ( keyboard, setting, ... ) and and old attendance management System that is my objectif ( develop another software performant that this one ).
best regards
 
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