post_install() {
  echo 'Registering gt-x820 plugins/firmware with iscan'
  iscan-registry -a 'interpreter' 'usb' '0x04b8' '0x013a' '/usr/lib/iscan/libesintA1' '/usr/share/iscan/esfwA1.bin'
}

pre_remove() {
  echo 'Unregistering gt-x820 plugins/firmware with iscan'
  iscan-registry -r 'interpreter' 'usb' '0x04b8' '0x013a' '/usr/lib/iscan/libesintA1' '/usr/share/iscan/esfwA1.bin'
}