I've just been trained on the fingerprint drug test from intelligent fingerprint drug test, I have a few guys at work who smoke cannabis when they're at home and I took a hit for the team, I had a joint the night before and I volunteered to be tested, yes it sounds a bit crazy and I was worried that it would show up which I could potentially lose my job being a supervisor.

The test took 10 minutes by placing all my fingers one at a time on the pad which collects the sweat from your fingers, Then placed into the machine for analysis, I came up negative.

The reason I passed is because I tried and tested liquid skin which is for cuts and grazes (you can get on amazon) It's 100% waterproof and sweat proof, The good thing is that the machine cannot detect than no sweat is present.

When putting liquid skin on the pads of your fingers you must rub it in with your identical finger on your other hand until it dries and it's quick , the reason you rub it in softly is that it doesn't go shiny and it's more of a matt finish, so it's not noticeable on your finger pads.

Any questions, I am happy to answer,

So it works 100% as tried and tested by myself