PSI and their standing in the world

[Onkl]

Hi guys

I am planning a post-apoc campaign. One of my players really, really wants to portray someone with psionic powers. After much reluctance (I have never gm'ed a game with PSIs in it) I have allowed him to make a PSI character. His psionic abilities have the limitation "Costs Fatigue", if there is no cost mentioned in the PDF. I am also very restrictive in what PSI abilities I will allow PCs to take.

Now I have stumbled upon a problem I am not sure how to solve.

I don't want the PSI character to walk around and openly declare he has abilities unknown to man. This has two reasons (and probably 100s more I don't):

a) Some people might not particularly like mutants and/or PSIs -> He would be endangering himself
b) Some people might love PSIs, maybe a crazy cult is just waiting for salvation in form of a PSI -> The character could be overwhelmed

The PC, just the same as all the other PCs, grew up in a Vault with about a 1000 inhabitants. So there is no doubt that they all know each other.

The PSI PC got his abilities by being part of an experiment in the vault. He's the first survivor of the procedures. So the other PCs might not know about his abilities... but it's improbable.

What can I do to make this character try to keep his secret?

I've looked at the DisAd "Secret" and it seems to be the right choice. The problem with this DisAd is the heterogeneity in a post-apoc world. In my world, there is no central place of authority. So the consequences of the player disclosing his secret are different from town to town.

He might be the star and a demi-god in one (Which might not be a DisAd at all), in the other he will be shot on sight.

Could you please give me some ideas on how to handle this?

Thanks

Onkl