for argolis
SUBSYSTEMS=="usb" ENV{ID_IFACE}="$attr{bInterfaceNumber}"
KERNEL=="ttyUSB*", ATTRS{00000xxx}=="00000xxx" SYMLINK+="triplereader_TEST$env{ID_IFACE}"

Serial number: 00000xxx
Readername: triplereader_TEST
The new names for the triplereader with serial number 00000xxx will be:
P1 = /dev/triplereader_TEST00
P2 = /dev/triplereader_TEST01
P3 = /dev/triplereader_TEST02

and your reader..

[reader]
label = triplereader_TEST
protocol = mouse
device = /dev/triplereader_TEST00

viel spass