Thank you for your question,
The data from the device will be always sent as hexadecimal, there is no option to configure this, since this is how data is formatted. All of the communication of device - server is based on this.
The hexadecimal data should be parsed at server side and converted to ASCII format if required.
In order to display a driver name a custom server implementation required, you should assign certain iButton or RFID IDs with required names (a database should be created).