I really like the idea of having an 'ATM' for the slave collar settings, it would make things easier than having to go all the way down to the BAF office. I also like the idea of being able to monitor a slaves whereabouts via satellite and therefor and 'app' on the owner's phone. I'm with Haibane on the fact that it would be more of a paid-for service, with a monthly fee, upgrades, special features, etc., than with just a regular app.