The core idea was to work with a commercial TV broadcaster in to embed the codes in certain ads, or have it as part of a TV show - so the "listener" would need

The core idea was to work with a commercial TV broadcaster in to embed the codes in certain ads, or have it as part of a TV show - so the "listener" would need an active app to handle it. If it had all gone off well, the eventual plan was to have it be used on a live show where users could also interact. We had some prototypes ready with a native app - but then the Brexit referendum happened - and our company had a couple of clients pull out of upcoming projects - and the company got shuttered.