This is very, very, _very_ bad idea. It will mean you'll eventually need compatible (spying) phone, with compatible (probably spying) app, and your identity will be all over the network, helping spies and other bad guys. (And increasing vendor lock-in, not to mention mandatory camera and NFC). https://www.seznamzpravy.cz/clanek/zahranicni-video-tlacitko-je-mi-18-a-vice-uz-nebude-stacit-eu-chysta-velke-zmeny-315676