The American Civil Liberties Union has raised questions over how “effectively” Apple can enforce certain privacy rules surrounding face scanning.The ACLU is concerned that certain pieces of facial data can be taken off the iPhone X by developers who seek to create entertainment features with the new smartphone's facial software. This refers to the fact that App makers who want to use the new camera on the iPhone X can capture a rough map of a user's face and a stream of more than 50 kinds of facial expressions. This data, which can be removed from the phone and stored on a developer's own servers, can help monitor how often users blink, smile or even raise an eyebrow.”The privacy issues around of the use of very sophisticated facial recognition technology for unlocking the phone have been overblown,” Jay Stanley, a senior policy analyst with the American Civil Liberties Union told Reuters. “The real privacy issues have to do with the access by third-party developers.”That remote storage raises questions about how effectively Apple can enforce its privacy rules, according to the American Civil Liberties Union and the Center for Democracy and Technology. Apple maintains that its enforcement tools – which include pre-publication reviews, audits of apps and the threat of kicking developers off its lucrative App Store – are effective.The data available to developers cannot unlock a phone; that process relies on a mathematical representation of the face rather than a visual map of it, according to documentation about the face unlock system that Apple released to security researchers.