eric knol who is the united states policy manager at access now that's a group that defends digital rights warm welcome to you all thanks for joining us here on inside story i'd like to begin with you if i can what's your take on this feud between facebook and apple has it been a long time coming and also with these changes who want to do you think is going to opt in and say yes i want to be tracked. yeah that's a that's a great question i think it's been brewing for quite a long time are there in some ways it's quite overdue so we've seen for many years is that companies like apple that control operating systems have tried to control what software can be run on their devices largely to ensure that users can easily leave their ecosystem and the value can be extracted from users such as your charging subscriptions to apps and have a company like apple take a slice now these companies have put on 2 different types of constraints on developers of software they put on contractual constraints that limit what kind of apps can go into an app store for example no point to graphic apps and they can