One of the dangers of spreading viral infections is the invisibility of the chain of infection.
Middle Field Solution: GPS
The Global Positioning System („GPS“), officially NAVSTAR GPS, is a global navigation satellite system for positioning.
Near Field Solution: Bluetooth
Temporary Contact Number (TCN): Data item which is broadcasted to devices nearby, it is public and can be…
Touch Field Solution: QR Code
It’s a QR code. This code contains information that a scanner can convert. So you can use the code to download.