Black-light reactive cards?

[OrangeHatGuy]

Background:

I recently acquired a large collection of MTG cards from a friend, and I have been charged with the task of selling them. I know the basics of the game, and I am a veteran at buying/selling other TCGs.

During my research I found a few sources that mentioned black-light as a method for determining fraudulent cards. I'm not concerned about the authenticity of the cards I have, but I am the inquisitive type (and I happen to already have a black-light) so I plugged it in and turned off the normal lights to see what all this was about.

Aaaaaaaaaaaand I saw nothing beyond what you would expect any printed surface to do under black-light. Card after card the white areas glowed a little and there was nothing exciting to see.

So the question I am driving at here is twofold:

Is this true or just a myth the MTG cards are black-light reactive?

If it is true, what am I supposed to be able to see under a black-light?

Thanks in advance to anyone who can confirm an answer to this :)

Additional Comment:

nobody knows? or nobody cares?

[Dunjohn]

Probably nobody knows. I'm pretty good at spotting fakes but I've never heard of any method using black light. Maybe some specific fakes have been made using reactive elements?