“What I can say is there are many ways to surveil each other,” Conway said as the Trump presidency marked its 50th day in office during the weekend. “You can surveil someone through their phones, certainly through their television sets — any number of ways.”

Conway went on to say that the monitoring could be done with “microwaves that turn into cameras,” adding: “We know this is a fact of modern life.”

Conway did not offer any evidence to back up her claim. But her remarks are significant — and potentially explosive — because they come amid a request by the House Intelligence Committee for the White House to turn over any evidence by Monday that the phones at Trump Tower were tapped as part of what the president claims to be a secret plot by the Obama administration to monitor his campaign.