I’m looking for a Hook if contacts are updated,
if there are no such Hooks, what is the best way to read inforamtion out of contacts in an app.
Concretely I need it for the maps app. Contacts with a geo tag are no problem. The Problem is with vCard which only have an address. I need to lookup the geo information for the address, and this is not possible on demand. So I have to do it in advanced an cache the results. It would only be needed once per vCard. So going though all contacts with a cronjob seems realy unefficent.