recovering figerprints licening rubbish.

Sky news had the old news of recovering old fingerprints from shell casing. This is not a great technology or bloody new either. They are looking for someone to licence the technology. What fucking licence, its basic electrolysis which you can do at home for fuck sake. This licencing shite with every "new" discovery is what I really hate. They are the bloody police so why the hell are they allowed to licence this crap. At the very least they should just tell all the other forensics the exact method they used to do this. Its not that hard either as I said you can do this at home with a bloody car charger or any decent power supply. how did this take 3yrs to devolope.