#To get the serial number of the phidget, use the following line: lsusb -v |grep iSerial.*3 # or use "serial -1" if you just want to connect to the first available Phidget device. driver ( name "phidgetRFID" provides ["rfid:0" "dio:0"] serial -1 alwayson 1 samplingrate 40 alarmtime 45 )