We have now developed an integration for FlexyKey by Flex Access AB.
See https://flexaccess.se/en/produkter/flexykey/
With this integration, you can use Blippa to open gates, doors etc, controlled by a FlexyKey control box.
FlexyKey has built-in support for SIM cards and adds 5G Internet connectivity.
With this, Blippa can open the door, provided the user has security clearance for the door.
Also, a payment option can be added for public toilets etc.

