This feature from mobile devices lets you know if there are already similar or the same ideas as yours; you can re-implement them.
How to do it?
When creating an Improvement Idea, an alert will be activated at the top of your Idea; it will notify you how many Ideas are similar to yours
By clicking on the lightbulb, you will find all those similar ideas
If you identify an Idea, you can Re-implement it to avoid duplicating it
If you Re-implement one of those Ideas, you will win 10 points and also the team that created that re-implemented idea.