Dumbledore's animagus, invisibility

[cherlouize at aol.com]

No: HPFGUIDX 115380


Finwitch:
<<With a whole *section* of books about invisibility, I'd say there are 
*plenty* of other ways. I think Dumbledore casts an invisibility charm on himself to wander around the hallways unseen...>>


Greetings -
I'm a long-time lurker who, for some odd reason, felt like chiming in.  I've 
been wondering about Dumbledore's invisibility myself.  Specifically, I wonder 
if there are any methods of invisibility available that would prevent 
detection by means other than direct visual contact, e.g. the Marauder's Map.  We know that Animagi show up on the map with their human names.  So even if 
DD were a bumblebee Animagus, he'd show up as himself.  And we know that Harry shows up on the MM, even while wearing his cloak.  Perhaps it's possible to make oneself unplottable (as has been mentioned vis a vis Sirius & owl post), thereby also rendering onself invisible.  

On a related note, how common do you suppose magical devices like the Map are in the WW?  The MM was unique in that it plotted Hogwarts, its environs, and its inhabitants.  But similar devices may be commonly used by Magical Law Enforcement, for example.  Or by the mothers of far-roaming youngsters.  Perhaps DD is in possession of such a device that tells him what Harry is up to.  I've always wondered what he meant when he told Harry that he had been "watching [him], more closely than [he] can have imagined."  (Sorry, 
don't have my books here, can't give page reference).  Any theories on this?

Pax et bonum,
Cher