Once upon a time I was involved in a thing called EDTracker...
I left EDTracker Ltd back in the summer of 2018 so am no longer officially involved, however it seems the company has possibly wrapped up now - certainly their website has disappeared with no formal announcement. If you're after the software to run EDTracker then, for the sake of history, I've got some old copies which you can download from here if you need them. Please bear in mind I never wrote this software and the source code was never made available to me, so it is what it is - I can't support it, I can't fix anything wrong with it, if you can't get it working please do not contact me asking for help as I'm no longer involved with the product or company!
EDTracker Pro software v18.104.22.168 download (NB : this is NOT for use with EDTracker DIY)
EDTracker Pro Wired User Guide
EDTracker Pro Wireless User Guide (English)
EDTracker Pro Wireless User Guide (French)
EDTracker Pro Wireless User Guide (German)
EDTracker Pro Wireless User Guide (Dutch)