DILD / DSILD which means Dreamsign Induced Lucid Dream. I saw this on Wikibook: Lucid Dreaming I figure if you visualize your dream sign like mine is people and keep visualizing. Than say like an intent. For example: "When I See [People] in my dream. I will become lucid and aware." So thats my idea that should trigger a dream and create the lucid state of mind everyone wants to reach. This is also all the more reason to keep and use a dream journal/diary to see what it is your personal dreamsign.
This might also be connected to or augmented into a WILD or WBTB Methods of dreaming.

So all you need is:
- Somewhat Vivid Visualization Skills
- Dream Journal
- Knowledge of inducing a part of a WILD or WBTB.