I wonder why it has not been used till now .. * just start displaying the originator's number on the top of the post - "originated by 1234567890". * All phones as it is display caller IDs on sms and calls, why not do it on whatsap posts as well ??? * The technology exists and whatsapp/google/twitter/facebook know who has posted what from where, but for some reason they don't want to do it .... *