To make sure your scan works well:
Use the original document, not a photo or photocopy
Take the photo in good, even lighting; not too dark or too bright
Avoid shadows or glare on the document
Make sure all text is clear and readable
Check that the document is still valid/not expired
Use a smartphone if you can; it usually works better than a computer webcam
For some types of ID, Vouchsafe will ask you to scan both the front and back. For others, the front only is enough.
Why we ask for photo ID
A photo ID helps confirm who you are. It lets us:
Check your ID is real and matches official records
Confirm that you match your ID, using your video selfie
Follow the rules set by the organisation you're verifying with