Is PingChat able to add a BlackBerry pin contact?

As I’ve seen on the internet it says if we use PingChat the other person also have to have PingChat on their phone to be able to ping each other.

But a friend of mine said for Blackberry users it’s different. For instant if someone has an Android phone and they have PingChat downloaded they could just add someone’s BBpin and they’ll be able to ping eachother.

So is this for real or not? Because I’ve read a lot on Google and they didn’t say anything about that.