Not-A-Lotto by Paul Brook

With ‘Not-A-Lotto’ you will have a set of lottery ticket images on your phone that look like the real deal. These lottery tickets are a mentalism utility tool you will always have with you.
Here is what the effect looks like:
The performer removes a phone and displays a set of ten losing lottery tickets while explaining to the participant that he never wins because he can read humans, not lottery machines.
Handing the phone to the participant, she chooses any of these losing lottery tickets and randomly chooses any six numbers from the ticket and adds them together.
Without the participant saying a single word, the performer can tell the participant what numbers she is thinking of.