Yes, unless the instructions specifically say otherwise. DBS requires both the front (with photo and HKID number) and back (with date of issue and chip number).
Typically 1-3 business days. You will receive an SMS or email when processing is complete. go dbs com hkcardupload
: Enlarge scanned images of your Identity Card to 200% and increase the brightness for better legibility. Yes, unless the instructions specifically say otherwise