Pointless
What is the point of having to scan the document every time? Then show anyone the scan. Seems like it would be better to have the document that you have scanned saved on your device. Great that it can be in English just a pity the help info is not also! So, to conclude a reasonable app, that seems like it does not fully understand how people will use it! So what’s the point of an app that for border control means you have to find the doc scan it and then keep your app open to show them! Might be simpler just to show them the doc.