Luckily, I've devised a plan. I know I've gotten inspiration for this somewhere but I can't really remember where right now. Anyway, I have formed a secret code that's hard to guess and that only I know and that I haven't told or will ever tell anyone. I will never write this code down and I will never say it out loud. I have embedded it deep into my brain and no-one could ever possibly know it but me.
Okay, so maybe him too.
So anyway, if anyone comes up to me claiming she's my future self, all I have to do to verify her story is to ask her the secret code I've formed and remembered in my mind. If she's telling the truth, she should know that code, too and it would save both of us the time and effort with all the formalities and we can get straight to business.
Haha. What do you think? Sorry, my brain has been reduced to mush right now and I still have a lot to do. Oh noeees! :O