Push message only for specific client

[vished]

Dear all,

How can I create some push notification with primefaces p:push only for an entity with ID =1 from my database?

In more detail: I have in my database a table "device". This means every time if a computer / tablet connects to my webapplication a new device will be stored in my database.
I have also a SessionBean for the device.
This means a connected device knows "I am device with ID = 1".
Now I would like to send a push notification only to this device with ID = 1 Can anybody help me, please?

Thank you very much.