I hope someone can help.  Some of my users work in areas with poor mobile data service.  I have added an option to allow them to store all the work on their handheld and sync when they find a good signal, this data includes photos.  I would like to be able to let the user know which records is being synced when they hit the button.  I have managed to cobble together a sync but most of the details of how to sync are a mystery to me.  

What would be a best practice to do this?

Thank You

Andy