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.
Why would you assume there's no additional authentication imposed? You definitely need to establish a connection wherever you are, and most likely you do using a dedicated and pre-authenticated app on your phone.
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).
Absolutely, writing modern PHP with Laravel as a framework makes the whole language feel totally different compared to just even a few years ago. I do also really like the statelessness of how PHP is ran.
At the day job we are using it to serve tens of millions of API's a day, without having any issues concerning stability and/or scalability.