This app allows you to use various points for eco activities and stamp rallies. When using QR + GPS, there is a problem of power consumption due to unauthorized use of QR or GPS. This is an easy-to-use digital stamp book.
This app allows you to use various points for eco activities and stamp rallies. When using QR + GPS, there is a problem of power consumption due to unauthorized use of QR or GPS. This is an easy-to-use digital stamp book.