Connect with beacons and write/read data

Is it possible to connect with beacons and later write or modify (also read) its data?
I have read this but i did not find anything but monitoring.

Any help? I have also read about BLE plugin but is impossible to introduce a password to connect with the device.

Have you found a solution? I have the same problem

Nop, sorry.
I did my own connector based on the source code of the beacon (jaalee)