I just received a media drop from a portal, I opened it and got an image of an internal Niantic memo entitled "Identifying Sensitives".
I know that this is a part of the game, and if I can decode the image I'll get a passcode to unlock some in-game items. But I don't have time during the week to go through the thing pixel by pixel and converting the first letter of each line to hex, etc etc.
So what I'm wondering is, can I ignore it for a few days, or a week, and still gain items from it later? I believe that Google recently changed how media codes given out via google+ and twitter work; they now expire after a short time. I'm hoping the same does not apply to these in-game codes.