GPG and PhotoID
To add a PhotoID to your GPG key is fairly simple. You'll want to edit your key, and issue the addphoto command.
To delete simply select the sub key, by typing it's number (in this case 2).
gpg --edit-key 3C88C6DE
Command> addphoto
Pick an image to use for your photo ID. The image must be a JPEG file.
Remember that the image is stored within your public key. If you use a
very large picture, your key will become very large as well!
Keeping the image close to 240x288 is a good size to use.
Enter JPEG filename for photo ID: c:\download\foo2.jpg
Is this photo correct (y/N/q)? y
To delete simply select the sub key, by typing it's number (in this case 2).
pub 1024D/3C88C6DE created: 2003-10-30 expires: 2007-01-01 trust: -/-
sub 4096g/740F8517 created: 2003-10-30 expires: 2007-01-01
(1). Scott Baker <scott@perturb.org>
(2)* [jpeg image of size 2653]
Command> delphoto
Really remove this user ID? y