Kobby Discount It been a while replying to this and that is because i was busy putting your suggestions to work. I had to create a complete small App to try out your suggestion though it did not work as i expected, i was impressed with the outcome It did not work on my main project though but I am convinced that if you did know flutter/dart, you would have helped me willingly. Once again am grateful for your assistance. Thanks bro.

Olalekan Adekola Thanks for the reply. Lemme put this to work and get back to you please.

Olalekan Adekola You are gradually becoming a blessing to me bro I am using Firestore as my backend. Lemme show you a pick of my backend and then see how the suggestion you just made can be applied. The link below will lead you to a pic of my database. In the backend i have collections (tables - president, secretary, porter, finance, organizer, voters. (the voters are the users and the positions are reserved for candidates ) and document. ]: https://i.stack.imgur.com/hXgaj.png

Olalekan Adekola Thanks for the response The app is a voting app for a school. There are numerous positions like: President, Secretary, Finance, etc. What i want is for users to be able to vote in each category/position only once after login or registering on the app. At the moment, users can vote more than once and that is not what i want. I think scenario 2 fit what i want the app to do. Could you please brief me on scenario 2 also? Thanks cheers :)

Thanks for responding to my question. Per your response, it means i have to create a hasVoted field for each user isnt it? Again i wanted to know will the code you have suggested be a class on it on? If No, where do you suggest is appropriate place (within my code presented in my question above) to fix it?