NFC Focus Key

A small NFC tag without a battery that ends a focus with a scan and brings the apps back. It lives outside the phone, with the parents for example.

An NFC focus key is a tag with an NFC chip, the kind you know from contactless cards. It needs no battery. Start the scan in the app, hold the iPhone to it, and the app recognises the key and ends the focus. Because the key is a separate object, it can stay where it belongs, with the parents for example.