[Cryptography] Missing symbol annoyance with unicode technical standard.

[Ray Dillinger]

I have longstanding annoyance with the many, many different facets of 
the Unicode standard's infamous, disastrous ability to form sequences of 
codepoints that look exactly like other, different sequences of 
codepoints.  But today I found a completely new, different, far more 
easily mended and far less important reason to be annoyed with it.

In designing a text UI for an application where the users actually do 
some key management, it would be nice if unicode had a "keyhole" icon, 
distinct from the various "lock" icons.

Anybody got a good idea what block such a thing ought to go in?

Bear