> How do I make sure that 1000 distinct people do it and it's not just 100 people getting in the line 10 times each? https://www.amazon.com/dp/B075KP3J3T/ http

> How do I make sure that 1000 distinct people do it and it's not just 100 people getting in the line 10 times each? https://www.amazon.com/dp/B075KP3J3T/ https://www.amazon.com/dp/B075KP3J3T/