We may have to ask McMaster Carr to have a put a code on their hardware that works on the most commonly used vape gear. It should be a code only the vapers will understand -- like the STMRBASCR (Kanger Subtank Mini rba Screw) or KFL+O (kayfun Lite Plus O Ring) -- you get the idea! I think during the days of prohibition, there were all sorts of codes used to outfox the authorities. We can do the same!
Ummm. No. Great way of taking a great company and forcing them to do things via government regulations that they never intended to comply with.
Law enforcement today is a LOT different than it was back in Prohibition. If you think some type of "code" would go unnoticed, you'll have a very rude awakening.