This may have already been covered.

 

In TSR, Egwene visits in her dream Tanchico where she goes to the museum she notices the ter'angreal, isn't one of them a broken access key, a female one, now wouldn't that make two of the female keys and if it is I just wonder if there is another male one too... ??? :o

 

I know the Choedan Kal was destroyed but to me makes an interesting thought.

I mentioned this before, but have come to agree that it is not signifigant as both the sa'angreal are destroyed. A key with no lock is just a hunk of metal..

Maybe not everyone is aware and you hand it to them, or they beat you and grab it and fill themselves with the power ;D