You’ve received the PDF from Bernstein but are stuck with the next move. Notice that all things aren’t in black in a white but in this case, most of the text is white. Can you work out how to read this?

Perhaps copy the whole of the document and paste elsewhere to reveal the hidden content.

You've now got the content but still not sure how to piece it together. The middle word links the words either side of it.

Still not sure? Here's an example JIG _ _ _ DUST - if we add the word SAW in the middle we now have jigsaw and sawdust. Hope this helps.

You've got all the missing words but not sure what next? The original PDF document has some highlighted pieces - this should help.

Star FISH tank Ready MIX tape Salt WATER melon Rock STAR light Toy STORY book Time MACHINE gun Power PLANT based Star SHIP wreck High JUMP Start Hand BAG PIPE Lion KING Cobra

The parts highlighted in red would spell out: historyinthemaking. This is the code for the WiFi.