My Company think about using this nice device.
http://www.dialogic.de/ebs-260-handjet-drucker-beschriftungsgeraet.html
To fill this Device with Data it play ping-pong (simple protocol with command/answer) via Bluetooth.
It would be nice if PowerApps can send/receive data from a paired bt device.
example of use:
in powerapp input or scan barcode/id as filter,
connect to sql database via gateway,
get marking data from sql server database table.
then i need send data ...