I was recently the Fiduciary, or executor, or an estate where an iPad was involved.
I sent a letter, as the Fiduciary, along with my appointment papers, requesting the password, in order that a proper value of the iPod could be determined, which included the data on the iPad.
I immediately made an appointment with the Judge of the Probate, and explained the situation. She immediately sent a letter to Apple, demanding that they supply or clear the password, or be charged with contempt of court.
They sent the password.
Thankfully, this is not a large area, population-wise, that this could be handled quickly. I can only imagine how difficult it could be in a large city.