https://github.com/chiragchaplot/Customer-Scanning/blob/master/app/app-release.apk

1. Collect Name, email, and phone number
2. QR Code scanner – QR Code can contain similar information like name, email, date of birth and phone number
3. For phone number – display drop down list with all countries code, or abbreviation of name (Like BH for BAHRAIN) or flag
4. Using regex to extract data from scanned QR code
5. Send all data to an online database
6. View all the data by fetching from online database
7. Send email to the entered email
8. Offline synchronization - store data on phone and when connected to internet synchronize phone database to online database