Creating a warning sign if the same QR/barcode is scanned twice by 2 different people

[Kal_Lam]

@Diana639, having a unique case (submission) within the server database is impossible. We, however, have a feature request for it. Maybe you could VOTE for the same to make it a reality in the near future.

Unique Case ID

Feature name: Unique case ID Deadline: Not defined General goal: To allow data collectors/respondents fill in data only once (without repetition) from respondents provided with unique IDs Example use cases: An example of application that has unique ID features is CS-Pro

Note: If you have funding available for this feature, please feel free to reach us so that KoboToolbox could review this feature request to get to a priority.