Perhaps I can provide some comment in the hope that you guys can weigh in on the other side of this. Knowing that there would be a hesitation to send material, whether it be illegal documents, electronically.... You're then worried about a secure server and so on, as opposed to bringing an electronic device, putting it in front of somebody, and saying “Here”, that being the illegal document.
There still appears to be a threat there. Somebody could bring something across on their phone that they wouldn't necessarily feel comfortable sending over some sort of server.