An MQTT-client implemented in the app to be able to post MQTT-messages to a specific topic and with an arbitrary message.
Extras: Password authentication support to authenticate to the MQTT-broker.
MQTT support for the Flic Hub would make it easy to integrate with other things like Home Assistant. MQTT clients in most relevant programing languages can be found here: http://www.eclipse.org/paho/
An article about MQTT on the GR8 chip: https://thenewstack.io/off-shelf-hacker-putting-mqtt-broker-work-chip-platform/