Hands or any digital display things. If they looked weird and jumbled, then im definitely in a dream.
Oneironauts
Welcome oneironauts, lucid dreamers, explorers of the unconscious and milam practitioners. Feel free to share your experiences.
Looped false-awekings usually happens to me when I want wake up forcefullu bc, for e.g. I feel I have dreamed enought and I am bored. It seems that in such situation my body cannot just wake up immediately on my whim, but the dream tries to meet my expectations and thus false-awakings are created.
Don't need any kind of "reality-checker". The enviorment in my dreams is rather erratic and a bit absurd, so it takes little time to expose itself. What's more, I am different myself than I am on waking. I have more problems with critical thinking and strict reasoning, I can't perform solid mathematical operations, my handwriting is sloppier, I am more naïve and prone to suggestion, I'm less timid and more talkative with unknown people.
It is really obvious to me when I am dreaming and when I am not.