Extrait de The Ecomonist

As for keeping an eye on people crossing borders, systems being developed for use at airports might find wider use. One idea is a single digital travel “token” to speed people through airport terminals, even on multiple legs of a journey. A prototype of such a system has been developed by sita Lab, a Swiss technology group owned by the airline industry.

In sita’s system the token resides on a traveller’s mobile phone and represents encrypted travel documents, passport details and other information. Whenever the traveller arrives at a checkpoint or is stopped by an official, the app is used to generate a QR code. That code is then scanned to confirm the traveller’s details. These are held in a database secured, as might be expected, by blockchain. Regular commuters across land borders could carry similar tokens on their mobile devices.