To track a Parcelforce consignment programatically:

https://app.parcelforce.com/api/GetTrackData/UG111111111/0?callback=no

Replace UG11111.. with your consignment number.

Code to then look at the data:

require 'http'
require 'json'
require 'awesome_print'

consignment = ARGV.first

stop_position = 0

loop do
  res = HTTP.get("https://app.parcelforce.com/api/GetTrackData/#{consignment}/0?callback=no")

  raise "Failure #{res.code}" unless res.code == 200

  data = res.body.to_s
  data.sub!(/\)\;/, '')
  data.sub!("/**/ typeof no === 'function' && no(", "")
  data = JSON.parse(res)["Routes"].first

  my_stop = data["CustomerStopNumber"].to_i
  last_stop = data["LastStopNumber"].to_i

  if last_stop > stop_position
    stop_position = last_stop
    puts "Last stop: #{last_stop}  My stop: #{my_stop}"
    puts "#{my_stop - last_stop} stops to go"
    puts "#{last_stop},#{data["LastStopLocation"]["Latitude"]},#{data["LastStopLocation"]["Longitude"]}"
  end

  puts "Sleeping"
  sleep 90
end