mastersian When using several instances of Tonfotos on different PC’s, they will have their own independent databases, however, all information about people on the photos will be synchronised during scan. So yes, initial scanning will take time anyway.
In theory it is possible to make centralised server with database and all applications would connect to it, but it would be completely different type of software, much harder to install and administrate. And it will require dedicated PC too, one that will be always on.
Tonfotos is targeted for home users with different pc administration skills, so we try to keep its administration as simple as possible.