Can you elaborate a little bit on that, tell us exactly what it is?
It's basically a liquid that you dab on specific components of the bike; frame, under tank, side panels etc, it is clear and cannot be seen unless under UV light and or magnification. The application kit is then registered on a database against your bike. If the bike is stolen and recovered the bike and owner can be identified by reading the DNA from the bike or an individual component if it's broken for parts.
It will not stop your bike being stolen but it is a deterrent as thieves cannot effectively remove the identity of the bike or its major components, making it difficult for them to dispose of. The deterrent part being the application of an overt discrete logo stating the bike is protected by; Smart Water, Alpha Dot or Datatag etc making it less desirable to thieves. Some also include a micro chip you can hide on the bike too and also another that can be injected into the foam on the seat.
The details are also transferable when you sell a bike assuming you have the correct documents.