OOP Chapter 2 Post DH look

[Zara]

No: HPFGUIDX 182497

> Carol:
>(Just how he could communicate with other Order members
> without his Patronus giving his secret away, I don't know. You'd think
> that Lupin, at least, would figure it out.)

zgirnius:
For this reason, I presume he never used a Patronus to communicate with 
the Order. We never see him do so. In OotP, he could have left the 
school grounds to Apparate to 12 GP in person.