I think maybe you're confusing "Reality Check" with "Dreamsign". Dreamsigns are the signals you choose to point out times for you to do a Reality Check. Reality Checks are the actual tests that you perform to decide wether you're dreaming or not. (the Reality Check Tutorial in the Tutorials Section has a list of different Reality Checks)

it's important for people to find Dreamsigns that work best for them, I'm glad you found yours.