This app tool read Qr-code and send the data by mail.
It saves Qr-code data even exit app.

This data saved with QR code data as memory for next activity.

It saves data even turn off app until data send by mail.
So, code data accumulate easily without internet connection and send later when connected to internet.

Good for exhibiter to read visiter's Qr-code and send by mail for next activity.

Mail app for ios required.

Now it supports iPad.