Although it does sound really nice from a user experience perspective I'm really hesitant with carrying a device with me that without any (additional) authentication would gain access to my home network wherever you plug it in. Would hate losing it or have it be taken from me.
Looks rather nice when looking at, but I have to say that (for me) the animations in the github page are way to fast to get any feeling of what the tool does.
Because, in the Netherlands you can get your 'illegal' drugs tested anonymously for safety for free (or a really small fee like 2,5 euro in high traffic places like Amsterdam).