Don't have Telegram yet? Try it now!
https://hanzama.x0.to/2020/08/09/a-contact-button-that-does-not-directly-touch-and-improves-the-control-by-touching-the-touch-ft/
直接触れなくても触覚を伴わせてコントロール性を向上させる非接触ボタン(Financial Times)