gistfile1.txt

osmc@osmc:~$ udevadm info -a /dev/input/event1 

Udevadm info starts with the device specified by the devpath and then
walks up the chain of parent devices. It prints for every device
found, all possible attributes in the udev rules key format.
A rule to match, can be composed by the attributes of the device
and the attributes from one single parent device.

  looking at device '/devices/virtual/input/input3/event1':
    KERNEL=="event1"
    SUBSYSTEM=="input"
    DRIVER==""

  looking at parent device '/devices/virtual/input/input3':
    KERNELS=="input3"
    SUBSYSTEMS=="input"
    DRIVERS==""
    ATTRS{name}=="python-uinput"
    ATTRS{phys}==""
    ATTRS{uniq}==""
    ATTRS{properties}=="0"

osmc@osmc:~$ evtest /dev/input/event1
Input driver version is 1.0.1
Input device ID: bus 0x0 vendor 0x0 product 0x0 version 0x0
Input device name: "python-uinput"
Supported events:
  Event type 0 (EV_SYN)
  Event type 1 (EV_KEY)
    Event code 16 (KEY_Q)
    Event code 17 (KEY_W)
    Event code 28 (KEY_ENTER)
    Event code 30 (KEY_A)
    Event code 31 (KEY_S)
    Event code 44 (KEY_Z)
    Event code 45 (KEY_X)
    Event code 54 (KEY_RIGHTSHIFT)
    Event code 103 (KEY_UP)
    Event code 105 (KEY_LEFT)
    Event code 106 (KEY_RIGHT)
    Event code 108 (KEY_DOWN)
Properties:
Testing ... (interrupt to exit)
***********************************************
  This device is grabbed by another process.
  No events are available to evtest while the
  other grab is active.
  In most cases, this is caused by an X driver,
  try VT-switching and re-run evtest again.
  Run the following command to see processes with
  an open fd on this device
 "fuser -v /dev/input/event1"
***********************************************
^C
osmc@osmc:~$ fuser -v /dev/input/event1
osmc@osmc:~$ sudo fuser -v /dev/input/event1
                     USER        PID ACCESS COMMAND
/dev/input/event1:   osmc        504 F.... kodi.bin
osmc@osmc:~$ cat /etc/udev/rules.d/40-uinput.rules 
SUBSYSTEM=="misc", KERNEL=="uinput", MODE="0660", GROUP="uinput"