OptOutCode

OptOutCode is a Privacy4Cars universal opt-out concept that allows consumers to opt-out of commercial surveillance by renaming their devices with the prefix '0$S'. This prefix indicates 'Do Not Sell' or 'Do Not Share' and is compatible with various devices, including smartphones, laptops, tablets, routers, and IoT devices. The OptOutCode is fully decentralized, eliminating the need for a central database of opting-out users, devices, or apps. Consumers can easily turn on OptOutCode by renaming their devices, while businesses can use backward-compatible and future-proof protocols to read and parse the opt-out code. The OptOutCode can be adopted by consumers, app developers, and businesses, and is designed to widen privacy protections for Global Privacy Control users without conflicts. Technical implementation details include the use of a simple prefix that can be easily detected by devices and apps, and the availability of an SDK for app developers to integrate OptOutCode into their apps. Specific use cases include consumers opting out of commercial surveillance, businesses respecting consumer opt-out preferences, and app developers integrating OptOutCode into their apps to provide enhanced privacy features. Unique differentiators include the simplicity and universality of the OptOutCode, as well as its decentralized and backward-compatible design.