[spin]

There's an article in the New York Times which says that Apple has already been doing this [1], but they seem to have had a change of heart in the past few years.

  Each data-extraction request was carefully vetted by Apple’s
  lawyers. Of those deemed legitimate, Apple in recent years
  required that law enforcement officials physically travel with
  the gadget to the company’s headquarters, where a trusted Apple
  engineer would work on the phones inside Faraday bags, which
  block wireless signals, during the process of data extraction.

1. http://www.nytimes.com/2016/02/19/technology/how-tim-cook-be...