Keri Systems BioPointe Users Manual - Manual (Page 20)

Features
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3.3 Remote Administration from Host Program
The BioPointe device provides two modes of communication channel so that the remote PC can
connect to the device to perform administrative function and upload log records from the device.
The serial interface supports the RS232, RS485 and RS422 specification. In order to prevent
unauthorized access to the device from remote PC, the authentication protocol is added to the
communication protocol.
Communication Authentication Mode
If the Communication Authentication Mode is enabled, the device will only accept command from
the remote PC only if the PC has successfully authenticated the device through the Start
Authentication
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sequence. If the start authentication sequence is successful, the device will be able
to process all subsequent commands it received.
Take note that all subsequent commands must be send back-to-back within the next five seconds i.e.
before the remote PC closes the communication channel. The End Authentication sequence
command must be sent to the device (to terminate the sequence) so that other PC connected to the
same network will not be able to access the device unless it has started another authentication
sequence successfully.
Note that BioPointe Central will handle the above procedure. However, the administrator is required
to register his or her fingerprint into the BioPointe Central database (from the User Setup option
provided by the BioPointe Central application). The registered finger will then be sent to the
BioPointe device for authentication before the device can accept any other commands.
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The Start Authentication Sequence and End Authentication Sequence commands are transparent from the
user of the BioPointe Central.