A months-old disputed claim that the official White House app secretly transmits users' exact location every 4.5 minutes has roared back into public view, arriving days after President Donald Trump barred three news organisations from the building and launched his own round-the-clock streaming channel.
The convergence of a White House-run video service, a press access lawsuit and a resurrected surveillance allegation has thrust the year-old app back into the centre of a wider media dispute.
