It is not a normal Sharpie.
While you might be able to make one yourself once you own one and know how it works, that would depend on your do it yourself skill level. And, you would need to buy the extra material.
Answered at 02:21am on June 2nd, 2019 by barts185 (89 karma)
It writes normally and could be inspected quite closely but it has been gimmicked in a specific way. You cannot just purchase one of these Sharpies at the store, you must use the Psypher Sharpie for this to work correctly.
Answered at 08:28pm on June 2nd, 2019 by joshburch (244 karma)